1) I think that polearm orders should be more specific. For ex; the customer comes in and asks for a blunt polearm.
2) Fancy polearm grip and fancy one/two hand guard.
3) Furnace cost. It can be like a daily bill for ex; at the end of each day, you pay ~10$ for each time you turn on the furnace OR fueling system which would be like you have to keep the furnace fueled with wood, and woods can be ordered from the shop for a price. (Or chopped down from the trees around the shop)
4) Weapon repairing. The customer comes in and gives you his/her broken weapon, and you simply re-create it and give it back. This idea can be improved though, the main purpose is to make customers ask for different tasks.
5) Daily quests. For ex; you have to earn a specific amount of money each day and as a prize, you earn experience or some blueprints to craft some more items.
6) More attributes to spend your skill points on.
These are all coming to my mind right now, thanks for the awesome work!