Tried one game of the Cthulu expansion for Smash Up. I played as Miscotonic U/Steam punk. The new factions seem interesting but they also seem a little too dependent on the other new cards. MU seems to rely a lot on madness cards, but if you're the only player with Cthulu cards there aren't going to be that many madness cards drawn for you to use. Also the other factions didn't have much in the way of getting rid of madness cards so it sucked for them dealing with mechanics that didn't exist when their factions were created.
Luckily for me one of the other players had another Cthulu faction that forced lots of madness so I had a lot of ammo to work with. Can't wait to try the other factions.