Crossover Pony Art That's Never Been Done

So, I been in the Brony fandom for many years and I’m quite surprised that there are some crossover artwork I never seen done. This is what this post is about: ideas for crossovers that might inspire an artist to do.  
Here are a few ideas from the top of my head:  
-Vinyl Scratch as 1999 Sid Wilson  
-Luna as Papa Emeritus II  
-Spike as Popestar Papa Emeritus III  
-Rocketman crossover with Derpy as Randall and Rainbow Dash as Commander Overback in the fart scene when Randall’s space suit inflates  
-Pinkamena as Tim Curry Pennywise

Welcome to the Wayne  
Haven’t seen that yet

Mlp fim/ lalapoosy.

I could name so many crossovers between the MLP characters and musicians/bands.

Any two fillies as Yuuri and Chito from Girls’ Last Tour.  
Tender Taps and Apple Bloom (or Strike and Silver Spoon) as Reg and Riko from Made in Abyss.  
A crossover with Konohana Kitan.  
Tender Taps and Tappy, from Harmoknight, tap dancing together.