One of the best parts of Friendship is Magic is the background ponies. Some shows have "B" arcs where a side story happens while the main story is going on, but we take it to the next level with completely unique little wordless worlds happening completely separate from the actual episode content.
Lets assume G5 throws logic out the window and adopts some cameo backgrounders for that far-flung Equestrian future. Who do you want to see make a grand return? Pick 5 and pop them in the comments below!