Tenafly Viper
An Artist Who Rocks - 100+ images under their artist tag
Artist -

@Background Pony  
Same. When she sang the “1,2,3,4” in “Raise this Barn”, I think she was actually counting the times it’s been destroyed before. :P
Background Pony #3E49
@zealiad  
There were rumors way back that he was going to do a guest slot, but nothing ever came of it.
zealiad

is that celebrity guest weird al?
DariusG

I would have put Twilight louses her wings
Background Pony #E3EA
well i think i know which mine is betting on.  
tag 24, 1 below free.
Background Pony #E3BA
money’s on barn destroyed
Rpground
Not a Llama - Happy April Fools Day!

Chaotic Neutral
More Starswirl would be awesome. The little that we hear about him as made him one of my favorite characters.
Background Pony #5863
Replace ‘struggles with’ with ‘fucks up’.
Dr_Osaka
Lunar Supporter - Helped forge New Lunar Republic's freedom in the face of the Solar Empire's oppressive tyrannical regime (April Fools 2023).
The End wasn't The End - Found a new home after the great exodus of 2012

Sata Andagi!
I want to see new town (Like Los Pegasus)  
And background characters like DJ-P0n3 getting speaking roles.  
I would also love to see Weird Al as a guest star.
Background Pony #39F6
@ALIS  
Exactly what I what,:)they must include what happed to the changelings!Or maybe have some info on them!!
Background Pony #39F6
Include QUEEN CHRSALIS please!!!!!!!!!!!!!!!!!
Background Pony #EB6F
I’m so sorry- I just read this, but whenever I read or hear “newtown” I just- I get sad. Real sad.
Revenant Wings
Wallet After Summer Sale -

Not-So-Stoic Royal Guard
@anonymouspegasus  
The ones to me that seem least likely to happen are the appearance of the Zebra kingdom, Celestia’s backstory, Starswirl info, celebrity guest star and Rarity’s Canterlot career. For Derpy, it depends whether you want a background shot or a line; a background shot is possible, but a line could be asking for trouble again like in Season 2.
Revenant Wings
Wallet After Summer Sale -

Not-So-Stoic Royal Guard
Middle row seems to have one of the highest chances of happening. Second row from the top has a high chance of happening, but the problem lies with a background character’s role; which would help out the show being the main question. I don’t think the second column would have too many problems with the exception of Rarity working in Canterlot would separate her from the rest of the main cast with reports that Twilight isn’t leaving Ponyville yet. The far right column would have a good chance but they should try and have more focus on Soarin than Spitfire considering his status as second-in-command and all we know him for is pie. And a Derpy appearance might have problems unless it’s another version of “Where’s Waldo” like in Season 1 and beginning of Season 2, and would that even count for that square.
Turnways_Flip
Artist -
The End wasn't The End - Found a new home after the great exodus of 2012

Far right column looks like by FAR the most likely outcome. Middle column an acceptably likely second, all the others are longshots.
flighty_filly

I kind of doubt they’re ever going to address a serious concept in MLP. Show’s too light for that.
Vargus
Duck - Here lies a dead duck
The End wasn't The End - Found a new home after the great exodus of 2012

@Dresfab Says you!!!
valachko

For “Bingo” read “Drinking Game.”
Monkey_Zombie
The End wasn't The End - Found a new home after the great exodus of 2012

Derpy will not be in season 4.
Zaedrin
The End wasn't The End - Found a new home after the great exodus of 2012

When is Season 4 anyway?
Silvercloud
Wallet After Summer Sale -
Not a Llama - Happy April Fools Day!
The End wasn't The End - Found a new home after the great exodus of 2012

Nazi ponies fuck off
@The Smiling Pony  
So is AJ’s barn, honestly.
Mrfipp
The End wasn't The End - Found a new home after the great exodus of 2012

I like this. It allows for some flexibility without being too vague. I would argue about “Cherimac” and “Serious concept addressed”. Mostly about to the extent they would be used.
igotnopicks
Lunar Supporter - Helped forge New Lunar Republic's freedom in the face of the Solar Empire's oppressive tyrannical regime (April Fools 2023).
Thread Starter - Splatoon thread

Monado User
@Mooncalf  
If it’s possible for Hasbro then I can accept his voice.
Ebalosus
Lunar Supporter - Helped forge New Lunar Republic's freedom in the face of the Solar Empire's oppressive tyrannical regime (April Fools 2023).
Silver Bit -
Sapphire -
Happy Derpy! -
Bronze Supporter -
The End wasn't The End - Found a new home after the great exodus of 2012

Build commie blocks!
@The Smiling Pony
 
Needs moar Celestia
Mooncalf
The End wasn't The End - Found a new home after the great exodus of 2012

This board looks fairly credible. Nothing too absurd, well within plausible limits. I’d like to see what became of Discord, and I know a lot of fans want a second chance for Gilda.
 
Regarding celeb guest voices, a friend of mine claimed that David Tennant had mentioned an interest in voicing Doctor Whooves, but I can’t find anything about it. Anyone know about this?