It would be nice to have an option other than thatch, if for no other reason than visual variation. Plus, it seems a little odd how roofing in general progresses so little as you advance through the game. You'd think that by the time you went from nothing but a ragged shirt and your bare hands to copper armor and weaponry, that you'd have found some other roof material. Same thing goes for beds for that matter. But hopefully that's just a matter of the game not having fleshed out its content yet.