If there is a drawback to this system, it would definitely be how much space it takes up in the brooder. But then if you think about it, with a heat lamp they'd be sleeping all over the place instead of in one place, so maybe it balances out in the end. I know that moving them outside made a world of difference space wise, and despite the change they seemed to appreciate the extra room. Good luck with the Cornish hatch! And let us know how your Littles do during the coop transition. At first mine huddled in a corner getting whiplash from trying to look at everything around them without moving anything but their little heads. Then one ventured forth and the rest, as they say, is history!