I don't like changes in general, so it may be a while before I get used to all these new cards and stuff, but this t500 idea sounds interesting. I would actually like this to be AI4 though, and have t50 moved up to AI5, with something like health increase to 150, and keep track of wins/losses there too, so that people would have more motivation to put up decks that will actually win games instead of just handing out rares.