I really like this game, I think it can do wonders for the fighting game genre, and I think it is really well balanced, but that can be hard to notice when a round ends in 5 seconds.
Also, having to win 4 rounds seems a bit... odd?
So, maybe reducing the rounds to win to 3 and adding every character 2-3 points of health? (the same amount to everyone. That way the current balance shouldn't be lost)
Or at least having the option to decide the number of rounds and deciding to increase the health in the singleplayer and local multiplayer modes.
What do you guys think?