It just occurred to me yesterday, after dumping once again 10000 stones in the furnace… That’s not how bricks are made, right?
I think bricks are made of clay, which you shape and cook in the oven.
We already have a distinction between stone houses and brick houses. Wouldn’t it make sense to introduce clay as a resource? Farmable on the shore of any water (pond or river), with a shovel?
I think this is definitely what the game lacks right now, beside rope bridges, in order to be finished.