We have recently gotten a mobile pasture coop and we have placed all our chickens in it. Putting them on pasture has given them more space, which has decreased fights and pecking, and they have room to walk around and graze for bugs, but cleaning out the coop (especially the nesting boxes, yuck!) is a lot more difficult then our old coops. This coop also has a solar door which closes automatically when it gets dark, so we don't have to put them in, but this does leave the possibility that a chicken would get locked out and be susceptable to predators.
these are some pics of our coop: