I have a pretty hard feeling that we're going to see 6 specific talking horses that each represent some kind of deeper meaning to each one of themselves that exist in a world around other talking horses. :v
No, but seriously though, I'm highly looking forward to this big "neutrality cutie mark" thing and all... I have a feeling it will remind me a bit of that "normal" Spongebob episode in ways... or perhaps it will have homage to a concept as such.