Neonchameleon
Legend
Why would I want to expect anything from my players?
Because if we're not on the same page there's going to be a trainwreck. When I GM I run in different styles depending on what I'm running; I'll run sandbox D&D very differently from Adventure path D&D differently again from Leverage differently again from Marvel Heroic Roleplaying differently again from Apocalypse World differently again from Firefly differently again from Monsterhearts differently again from Dread differently again from My Life With Master differently from Blades in the Dark differently from facilitating Fiasco. All of which are games that I can literally pull sessions together for with about ten minutes notice (and many of them less).
I need to know what to expect from my players. And there are combinations of players that are individually great to run for but combined I have a problem with.