QOL: More Decorations Should Increase Indoor Heat

I would like to see standing and wall torches, and fireplaces, contribute to a thermal heat increase that tracks throughout an interior structure. One of my bases is a massive house, but it's also a stone house with a considerable number of wall torches, two fireplaces, a smelter and a kiln, and completely enclosed, but I'm not considered “warm” unless I'm within a couple metres of the Flame Altar or one of the fireplaces. This seems unreasonable, because of the inherent insulation that even the basic stone walls should provide.