I suppose I'll revive this thread for things we'd like to see in the next game (or perhaps a new thread or a different thread's revival would be more fitting).
I want a random character switch to assign to a player's name. To explain, I'd like to be able to use the character randomizer but always get one of my favorite characters. The randomizer in Brawl loves giving me Donkey Kong for some reason, and to be frank, I do not like playing as him at all. What we have is a good start--it prevents the use of "punching bags" when playing computer players, at least (you had Bowser's name for all the negative Melee records too, didn't you? Actually I had Marth, but hmm).