1) It's not clear from the tutorial that you actually have to click *on* the snowball. But you figure that out quickly enough.
2) If you get behind on any snowball, it's pretty much game over. You have to wait for your next punch, and inevitably have to just get hit in the face with a light blue to have enough time for the next snowball.
3) Is there actually enough time to destroy dark blues? I haven't been able to yet.
4) Maybe have a snow-bomb that clears the screen?
5) Some bumpin' jams would be cool. I like the character design. And the background is pretty.
It's hard to say, exactly. Extra moves with more snowballs? It's a timing and precision game, whereas I wish it was a twitchier reaction game.