I too have played many card games (Magic, Magi-Nation, Yu-Gi-Oh, DBZ, Pokemon, just to name a few), and, plain and simple, the bigger the deck, the harder it is to draw what you need (unless, in the case of some games, you can use tutors or draw excel). Elements doesn't have Tutors, so we must rely on the Hasten ability of Hourglasses and Sundials.
Since you've played other TCGs, and that you claim to have calculated the odds of drawing, I think it's safe to assume that you understand that the smaller the deck, the more consistant the draws.
As for the hacker thing, well, there is only ONE person working on this game, so it's hard to maintain the server, get rid of the hackers, and work on improving the game while, at the same time, having a job, taking care of a family, and living a life away from the computer. Zanzarino has a full load.