Wait, wait, wait… So there is a limited number of boards and a limited number of extra boards that makes the game harder. There is also a limited number of tiles. That means there is a limited number of ways to solve each board. Now how fun is that? It looks like an advance version of Tangram. Another thing is those treasure cards. You're saying they allow to screw up the leader by forcing him to play his board upside down. That's OK, BUUUUT…. what if I do well already, I am the leader and then I decide to force other players to play their boards upside down? (unless that particular treasure card can be played only against the leader). Sounds like a terrible design.