I think it would be good to have building warehouses.
Suppose I have Product QL for wooden table but I don't have for picture frames. I would like my higher ql lumber to be used in wooden table not picture frames.
So, I think we should be able to some how put things in buildings warehouse or raw processing buildings be able to produce directly into factories warehouses.
It would use raw materials warehouse capacity.
That way, we would be able to better handle QL materials.