Even when you've completed your base after hundreds of days, everything you have is really just chilling outside on the dirt floor, and in the rain and snow. There's already walls in the game, so why can't we just have a canopy, tarp, roof to complete some kind of shelter. This shelter would also be great to protect from rain, like how trees currently help a little to protect from rain. Your things will remain dry, and you'd feel more at home i think.
here's my amateur photoshopping for concept idea. The roof becomes transparent when you enter so you can see what's inside.
Then another suggestion is to make skins for walls so that houses can look pretty.