I always thought it would be a nice idea to make it just a little bigger, by extending the house end. If you double the size of the house, you also add a little more run area under the house. Otherwise, it just seems a little small, for more than a couple of chickens. It seems kind of cramped and a little poopy inside, when I've seen a video of the interior. The chickens roost right over the nest box, so the top of it gets pooped on. I could see adding an exterior nest box helping with that problem, too. Other than that, I really love the basic design of that coop. I love the look of it and the covered run. Everyone that's posted pictures of it has done such a great job on their coops, too. They really look good.