I've been reading through "Book 2: Run" (got it for Christmas) and so far it seems like an interesting system for the GM and players alike. It's more collaborative than, say, D&D - in the first session, the players and GM are supposed to get together, decide what sort of game they want to play (including its power level and what the player characters' objective is - this sounds like a very player-driven game), and make characters with some connection to each other and the objective. Just thought I'd share some new observations, in case it piques anyone else's interest.