Logically speaking, if the game is unbalanced and you have an opportunity to balance it...why wouldn't you?
MVC2 isn't going to get balanced at this point, its a decade old and no one cares. Melee isn't going to get balanced, its on gamecube. Brawl isn't going to get balanced....oh wait...no...there's this thing called Brawl+ that's getting more and more popular. If I recall correctly they nerfed and buffed certain characters and match-ups. Tekken isn't going to get patched...oh wait no, there's that whole dark resurrection and bloodline rebellion thing isn't there...Arcana certainly won't get patched...wait...no I was wrong again, they patched both iterations of this game to fix certain broken characters. Well certainly Blazblue won't get patched, there's absolutely no way if all these other games didn't deserve a patch that the developers would never figure out a way to fix it.