Advance
The End wasn't The End - Found a new home after the great exodus of 2012

Alright, where to begin?  
The animation was good, but suffered from being either too sharp or too fluid. All together it was pretty, but the changes in quality really stood out. Snowdrop’s was better in my opinion.  
Even as a fan episode this work suffers greatly in story, pacing, writing and voice acting.  
The writing was one of the most awkward things I’ve ever viewed, especially the long sequences of silence and the dialogue between Twilight and Dash. I think I could’ve done better, and I’m not even a writer, this was obviously a problem since the very beginning of production and the fact that no one tried to rectify it is just mind-boggling to me.  
The pacing was horrendous, it jumps around from “fast Dash action scene” to “awkward moments of standing around” in matters of seconds. I understand that the director/writer was trying to capture the feelings of the characters with moments of extended facial expression, but it just doesn’t work without dialogue, a classic example of trying to translate the character’s emotions in your brain to the characters emotions on the screen, a problem that should’ve, once again, been rectified early in production.  
Now the story…the fricken story. Just, wow… The whole episode is just “look at how awesome dash is” and “look at dash flying” with shout-outs and references strewn throughout. And then out of fricken nowhere the whole thing turns into a PPG crossover fic. Why the hell would they do that!? I would’ve been fine with it if I’d gotten a heads-up before hand, but when the animation is marketed as “the first ever fan episode” I expect it to be like an actual episode! And that Pinkie scene at the end (which was cringeworthy in its own right) has the director ever heard of a “deus ex machina”?  
Twilight’s voice work was good, Pinkie’s and Dash’s were mediocre, but the actors in and of themselves were not he problem, it was the voice direction. Just simply horrible, Dash sounded like Ash from Pokemon for crying out loud!  
The characters were very OOC as well. Twilight was too sarcastic and critical and Dash was too…awesome? Too narcissistic? Too idiotic? I can’t even pinpoint it, but she was not the Dash we know and love.  
Twilight, Dash and Pinkie had all the dialogue. I mean, for a fan episode you expect it to focus on the main 6, or at least give all of them lines. But what happens instead? The fricken Power Puff Girls! They gave those 3 screen time that could’ve easily been given to the mane cast.
 
I did like a few scenes, like Twi hooking up Dash to her lab equipment and the credit sequence. But besides a few moments of entertainment, the episode altogether felt like a giant fan-wank to stroke the ego of Rainbow Dash, who, as I have stated, was portrayed horribly.
 
Animation- 8/10
 
Story- 4/10
 
Characters- 5/10
 
Pacing- 3/10
 
Voice acting- -7-4/10 (-3 for poor direction)
 
Writing- 3/10
 
 
Verdict- 4.5/10
 
Had promise and was worked on by many talented people, but was ultimately doomed by poor writing and direction.
Background Pony #301C
And when Double Rainboom has gone past I will turn to the fandom to see its path. Where the hype has gone there will be nothing. Only drama will remain.
Nexus

it’s like it was written by a 6 year old for 3 year olds to watch. it’s like as if it was aimed to an even younger audience than that of the canon show. not only was the story very poorly executed, but the “jokes” (punch lines) and instances were really awkward…
 
the entire story was just awkward. not to mention the voice actor for rainbow dash doesn’t even sound close to that of the real show. also the character traits used for rainbow dash in this story are very otudated as it uses old RD’s traits from the early season when she was still very stubborn. But she has quite evolved since then.
 
hell and i thought Merriweather was a bad writer…
SBF1
The End wasn't The End - Found a new home after the great exodus of 2012

@Grieffon  
See that’s exactly what would have made the episode engaging. Like, instead of just having references and stuff one after the other, why not have Dash get trapped in the PPG world? Dash has to spend time with the PPGs while Twilight and the rest try and figure out a way to get Dash back into the FiM world.
 
I mean, it’s a cliche plot taken straight from your typical “pony teleports to the real world” story, but at least it’s something.
SBF1
The End wasn't The End - Found a new home after the great exodus of 2012

@Calbeck  
Oh look, it’s the person who generalized all the “haters” as having “entitlement syndrome”. Hello there.
 
Why is Double Rainboom’s writing bad? Because it is essentially a non-writing. That’s improper grammar, yes, but it is the best way to describe it.
 
There is no story here to even critique. All the episode is is basically one fandom reference, meme, or unnecessary tangent after the other. There is no substance, story to follow, plot to get engaged by and invested in. Every single thing that happens in the episode is simply a cheap attempt to get the audience to laugh (advice for all aspiring writers: memes and references are not the punchlines, they are the buildup). There is no substance here, and that is what the biggest problem is.
 
Actual episodes of the show? They have substance. Even Mare Do Well and SAYS, for all their problems, have substance. There is a story to follow, there is a beginning, middle and end. Double Rainboom has no story, it has no substance, it has no story to follow. For something that the team hyped up so damn much, they failed to deliver on the writing aspect simply because it is the antithesis to what makes FiM’s writing good. Double Rainboom is all fluff, and no substance.
Grieffon
The Power of Love - Given to a publicly verified artist with an image under their artist’s tag that has reached 1000 upvotes
Equality - In our state, we do not stand out.
Friendship, Art, and Magic (2018) - Celebrated Derpibooru's six year anniversary with friends.
Birthday Cake - Celebrated MLP's 7th birthday
Not a Llama - Happy April Fools Day!
Magnificent Metadata Maniac - #1 Assistant
Bronze Bit -
Artist -
Happy Derpy! -
A Perfectly Normal Pony - <Grieffon> it does kinda dry out a bit with fast strokes

h
@Background Pony  
I mean the episode itself, not the aftermath of it :/
Background Pony #301C
@Grieffon  
Give it a second.
Grieffon
The Power of Love - Given to a publicly verified artist with an image under their artist’s tag that has reached 1000 upvotes
Equality - In our state, we do not stand out.
Friendship, Art, and Magic (2018) - Celebrated Derpibooru's six year anniversary with friends.
Birthday Cake - Celebrated MLP's 7th birthday
Not a Llama - Happy April Fools Day!
Magnificent Metadata Maniac - #1 Assistant
Bronze Bit -
Artist -
Happy Derpy! -
A Perfectly Normal Pony - <Grieffon> it does kinda dry out a bit with fast strokes

h
This probably sounds weird, but Double Rainboom doesn’t have enough drama.
Grieffon
The Power of Love - Given to a publicly verified artist with an image under their artist’s tag that has reached 1000 upvotes
Equality - In our state, we do not stand out.
Friendship, Art, and Magic (2018) - Celebrated Derpibooru's six year anniversary with friends.
Birthday Cake - Celebrated MLP's 7th birthday
Not a Llama - Happy April Fools Day!
Magnificent Metadata Maniac - #1 Assistant
Bronze Bit -
Artist -
Happy Derpy! -
A Perfectly Normal Pony - <Grieffon> it does kinda dry out a bit with fast strokes

h
@Calbeck  
There were no not many explanation about “bad writing” because there was hardly any writing at all. The Derpy scenes, the PPG scenes and many more just take up time without contributing anything to the story.
Sono
The End wasn't The End - Found a new home after the great exodus of 2012

Despite what the urban dictionary definition says, its used elsewhere as well. My southern grand parents used it all the time in place of faucet.
rainbowdashie
Since the Beginning  -

I never really cared for ppg, so when the crossover started I pretty much lost interest.
Calbeck
The End wasn't The End - Found a new home after the great exodus of 2012

Early pacing was off. Could use trimming out a few minutes. That aside, most of the rage I’m seeing is the SAME we’ve seen about the series itself: “pandering”. Which just comes across as Internet Entitlement Syndrome (i.e., passing off a personal preference as an objective reason for someone ELSE to hate something).
 
And the folks talking about “bad writing”? Be nice to see some detailed commentary backing up that score, but I doubt we’ll see any — it’s far easier and lazier to just say “it sucks” and expect everyone else to agree without a real reason to.
Itsthinking
Princess Ember - Derpi Supporter
Diamond -
Friendship, Art, and Magic (2018) - Celebrated Derpibooru's six year anniversary with friends.
Birthday Cake - Celebrated MLP's 7th birthday
Perfect Pony Plot Provider - Uploader of 10+ images with 350 upvotes or more (Questionable/Explicit)
Not a Llama - Happy April Fools Day!
An Artist Who Rocks - 100+ images under their artist tag
Friendship, Art, and Magic (2017) - Celebrated Derpibooru's five year anniversary with friends.
Silver Supporter -
Happy Derpy! -

🅱
@Sono  
dat Pittsburgh slang
 
Oh, and IDW also did an issue with a bunch of references. The thing is that they weaved them into the story, they didn’t make the story about them
ЅℰℒᎯℙℋℐℰℒ
Pixel Perfection - Hot Pockets Spotted
Solar Supporter - Fought against the New Lunar Republic rebellion on the side of the Solar Deity (April Fools 2023).
Twinkling Balloon - Took part in the 2021 community collab.
My Little Pony - 1992 Edition
Friendship, Art, and Magic (2020) - Took part in the 2020 Community Collab
Wallet After Summer Sale -
Friendship, Art, and Magic (2019) - Celebrated Derpibooru's seventh year anniversary with friends
Friendship, Art, and Magic (2018) - Celebrated Derpibooru's six year anniversary with friends.
Not a Llama - Happy April Fools Day!
Magnificent Metadata Maniac - #1 Assistant

Pomegranates :P
Gee, people are hard to impress nowadays. It may not have much story in it, I understand it was the main reason why people are so critical about it. But, I’m happy the fandom is capable of feet like this.
Background Pony #79CB
The animation was nice, which was the whole point of it, but yeah, the story wasn’t all that great and some parts dragged on for a while. It doesn’t really do anything to invest you in the story.
Sono
The End wasn't The End - Found a new home after the great exodus of 2012

@Itsthinking
 
Nope, Spicket :I
 
And I can see where those criticisms are coming from, and I get it. The references does indeed get in the way of telling the story. but really, I just took it for what it was and enjoyed it greatly. I think it’s best to leave story to IDW.
Dr Outback
Cool Crow - "Caw!" An awesome tagger
Not a Llama - Happy April Fools Day!
Magnificent Metadata Maniac - #1 Assistant
The End wasn't The End - Found a new home after the great exodus of 2012

The biggest problem I had was the pacing. This could have easily been shaved down to a 22 min episode. The voice acting was ok. I didn’t feel over run with references like other people. I noticed them but a lot of them were in the background as Easter eggs. I thought the episode was very comedic.
Itsthinking
Princess Ember - Derpi Supporter
Diamond -
Friendship, Art, and Magic (2018) - Celebrated Derpibooru's six year anniversary with friends.
Birthday Cake - Celebrated MLP's 7th birthday
Perfect Pony Plot Provider - Uploader of 10+ images with 350 upvotes or more (Questionable/Explicit)
Not a Llama - Happy April Fools Day!
An Artist Who Rocks - 100+ images under their artist tag
Friendship, Art, and Magic (2017) - Celebrated Derpibooru's five year anniversary with friends.
Silver Supporter -
Happy Derpy! -

🅱
@Leiden
 
@kruppenstein  
This. I wanted a pony fan episode, not a PPG one.
♥♥Princess♥♥Celestia♥♥
Solar Supporter - Fought against the New Lunar Republic rebellion on the side of the Solar Deity (April Fools 2023).
An Artist Who Rocks - 100+ images under their artist tag
The Power of Love - Given to a publicly verified artist with an image under their artist’s tag that has reached 1000 upvotes
Artist -

The Bestia
Simple plot, few too many references, Biiiit too slow at the start, Characters are exaggerated a bit too muh. ( I’m watching it now)
 
Though it seems okay to me, nothing terrible like people have made it out to be.
kruppenstein

It was basically “Rainbow dash drinks a magic potion which makes her go so fast she teleports to PPG universe” stretched to thirty minutes.
aceofscarabs
The End wasn't The End - Found a new home after the great exodus of 2012

The biggest issue I had was with the pacing and the storytelling, it didn’t do anything to really pull me and glue me to the screen.
Leiden 70F7
The End wasn't The End - Found a new home after the great exodus of 2012

It was the best Power Puff Girls fan episode I’ve ever seen.
Klonoahedgehog
Thread Starter - The Pokemon thread

Haven’t seen it because i can’t find it anywhere.
Grieffon
The Power of Love - Given to a publicly verified artist with an image under their artist’s tag that has reached 1000 upvotes
Equality - In our state, we do not stand out.
Friendship, Art, and Magic (2018) - Celebrated Derpibooru's six year anniversary with friends.
Birthday Cake - Celebrated MLP's 7th birthday
Not a Llama - Happy April Fools Day!
Magnificent Metadata Maniac - #1 Assistant
Bronze Bit -
Artist -
Happy Derpy! -
A Perfectly Normal Pony - <Grieffon> it does kinda dry out a bit with fast strokes

h
Too many memes, references and fandom shoutouts, not enough story.