My biggest complaint so far is the lack of available games. I know that's a sign of the game being popular, but maybe keep the number of people in the games more current? I've clicked to join a game with 2/6 just to get a full message.
There are no rewards associated with the badges in the game. Where's the growth potential here? You have access to the same cards, minus the class cards, each game so there's no goals to look forward to.
I am thinking for it. You will be rewarded for the badges earned in the game.