Do they have to go in at night? Mine have only been in their coop a couple weeks, and I'm leaving their windows open since it's at least 60 at night. Tonight they all went in on their own but once it gets hot they'll need as much ventilation as they can get, so I figured I wouldn't lock then in....
Depends on how confident you are in your run's security. The point of a coop is to provide shelter from the elements and security from predators... if your run provides both of those things, really don't need to have an enclosed coop at all.