I think you have hit the nail on the head!! IMO this style allows the birds to be...birds and not hot house flowers. I MO the air flow is MUCH better. THe only down side is lack of direct sunshine.I am about to start building my third Woods style coop in northern Idaho and can attest to being much MORE winter-hardy than my mother's closed in and heated coop. She's a city girl and names and babies her hens. I eat my culls and expect my flock to produce at top-notch or get the hatchet. I have never had a single case of frostbite while I know of dozens in closed in coops. Chickens breathe more humidity per pound than any other livestock animal.... Heated air holds more humidity than colder air.... Dry and cold doesn't hurt chickens. Honestly the most miserable times for the chickens are when its 35 and wet.... Ducks love it though.