I'll be happy when you can actually fight hand to hand in generations without fear of being hit with an ultimate jutsu immediately after the opponent substitutes. I do hope they do something about people quitting online because its pretty ridiculous. They should have to take a loss when they disconnect, that would discourage some people, particularly the ones trying to make it look like they're undefeated.
I know they won't do it, but I'd be happy if they took out team ultimate jutsu. It's not much fun to hit people with or to be hit with. I hope they let you fight one on one online other than in practice fights since a lot of fights in Naruto aren't team battles.