I think people expect for the movie to resemble the game they like in the first place, I think they expect for studios not to cast all the roles poorly with a bunch of geriatrics who don't fit the characters and Kevin hart the tiny little fuck as a bad ass. I think they expect dialogue better than the cringe level reached in the jcvd street fighter movie, they also expect at this point not to be able to call out the scenes that where blatantly filmed on green screens and then finished with barely industry standard CGI. They expect for the story to make sense and not be filled with tons of exposition, they expect competent direction. Borderlands could have been R rated guardians of the Galaxy with the right script/casting/direction, but instead we get a near universally hated toilet flush of 120+ million dollars.
My question is what do you expect from movies?