Thank you, Puma. First of all, if you're going to waste your time with a petition at least care enough to use the right word. Nobody is building a wall. Second, the possibly of abuse still exists even when trading cards earned through battle. If you're unhappy with the cards you have, earn more the same way the rest of us did - through challenges and lots and lots of Kongai.
I agree that badges would be nice, but what I'd really like to see are comprehensive battle history statistics. I think it would be interesting to know how I fair against higher level players versus lower level players, how many shut outs I have, and things of that nature.