They won't build a roof in mined out areas unless you closed it up with walls and a door. In most cases, you're going to make a room out of that area when you do that. There's a no roof zone if you didn't want them to add a roof.
Personally, I would HATE if auto-roofing was removed. It would be tedious to have to make a roof zone anytime you build and expand your base. It would be even more annoying when you're building oddly shaped bases. I'm aware I could just slap a boxed roofing zone over that area... But I wouldn't want roof sticking out in places I don't need and have shadow patches everywhere.
If you want to put your preference to the test.. Then load up a new game. Expand a no roof zone all across the map and start building.
Personally, I would HATE if auto-roofing was removed. It would be tedious to have to make a roof zone anytime you build and expand your base. It would be even more annoying when you're building oddly shaped bases. I'm aware I could just slap a boxed roofing zone over that area... But I wouldn't want roof sticking out in places I don't need and have shadow patches everywhere.
If you want to put your preference to the test.. Then load up a new game. Expand a no roof zone all across the map and start building.
