This game has a lot of really cool features but it seems a little barren when it comes to decorations, there's nothing really large- I mean there's the rug and a few others but nothing to give a town a bustling feel.
Flags and banners would be easy requiring linen cloth/silk and branches/metal, there could also be fountains which could take 100 stone or be carved over a large stone with stone working, and even if washing clothes isn't going to be in the game a clothes line (which could double as a place to keep clothes other than a wardrobe) would be a nice addition.