My wife suggested that I teach her and our 13 year old how to play Arkham. They're pretty good game players, their faves include Formula D, Robo Rally, and Thebes but they haven't tried anything as big as Arkham (although my daughter likes Doom). I own all of the expansions and most of the Mythos and location cards are kept seperated, but I generally just mix in the new monsters (other than mask or spawn).
Any suggestions for paring down the cup a little? Or maybe after doom token #5 hits then add a few tougher ones to the cup?