I have to say... I like the floor of the run better now that it has no roof. Before, it used to always be incredibly dry. Which, in general, is a good thing. However, it was also very very dusty... especially when the chickens were actively scratching or dust-bathing. Everything was covered with a thick layer of dust, including and especially the poor bush that's in there. Over the summer, I had to periodically hose it down so it could breathe. But now, the ground is pleasantly moist, and the thick layer of organic matter on the floor looks like it's starting to compost, finally. And I've noticed that the chickens will eat random organic matter like bits of fallen leaves or blades of hay left over from the summer lawn mowings, if it has been moistened and softened by water first. So, more things for them to eat and a better scratching experience. Silver linings!