This game has such a potential to be a REALLY incredible game, I sincerely love the concept and the playability, but it needs more cards to make the game more different, because with the variety you have here, you get bored of it very fast.
Another thing that would add a "better taste" to the game would be a true score at the high scores page, just like the badges, scores make people want to play more to be the best player =].
I really, really hope that there will be some updates fixing those things, and I will be very glad to help with art or anything to my reach =).