Puzzle design is his strong point (and the team has several v. good puzzle designers on it), so it's safe to assume there'll be some good ones there. The sheer quantity make me wonder about how the game will be structured - they can't presumably all be stumpers (aka hard puzzles that you'll have to step back from and think about) - maybe there'll be more of a gentle flow between puzzles, like in the Witness, or maybe there'll be lots of optional levels/branching in the game design. I guess we'll see! I'm curious :)