Do you think it will happen? A lot of popular fighters have unlockable alternate costumes. Obviously, Brawl isn't your average "popular fighter", but it's not like costumes affect gameplay. Alongside stickers, trophies, music, and even characters, I think another unlockable aspect would just expand the suspense value. I mean, you'd have to be a narutard to think a Chuck Norris costume wouldn't be great for a Bill Cosby character or someone from an anime/manga, or for that matter, anyone ever on a Nintendo system!
...Justification for the weirdness at the end of the post...
...Justification for the weirdness at the end of the post...