Defiance
Smash Apprentice
Say, changing your characters costume changes their model, i.e. play-style. Or perhaps, Y changes colour and X changes model. This wouldn't be viable for all characters, but a good example is pikachu - other models could be raichu and pichu. This would pretty much be a way to fit clones into the game without getting that "I got ripped off with clones" feeling. Still, Fox could pull out his staff (er... Crystal's Staff) with another costume and use that. It could add a lot of variability to the game, and even small differences, like character speed and weight would be cool, since changing movesets would be pretty extreme.
Still though, probably won't happen, but it would be interesting. Comments.
Still though, probably won't happen, but it would be interesting. Comments.