I think it would be awesome if you could create a game-mode that allows you to create your own original moves, and battle your friends with them. Of course it wouldn't be ranked, because of some of the overpowered things people could create, but it would be cool if it could work in ranked matches with a balancing system for the move's damage/effects. I would really like to see this added in, because it would be awesome to be able to create your own moves and battle your friends with them.