I'm totally against a rotation, having some cards you just can't play is a mess. The two format, a kind of legacy and a type 2 could be a solution in my opinion, but i don't think it will be viable due to the lack of support of the "legacy" by FFG and/or the player. To me the best would be to have some familybox (like targ highlights, shadow highlights…. etc) The new player would not need to buy all the pack ad for the old ones they can continue to play with their cards. But i'm sure the FFG's staff had already take a decision. it will be important because all the lcg will follow this line. They must not be cheating. My two cent.