So I did have some thoughts, pertaining to materials.
1) Alloying Copper/Tin for bronze, normally this is an 88% copper 12% tin, but it could be done as 9:1 ratio, which would allow people to make something more valuable than copper weapons but not as valuable as tin weapons (maybe a special station to do so?)
2) Material based requests like 'I want a copper one handed weapon' or 'I want an Iron Sword' where perhaps they take either a weapon made of the right material or being of the right type (ie either copper or one handed in the first example, or being iron or a sword in the second)
3)'Burning' ingots later on, where if you just leave them in the running forge for to long they will become 'burnt x ingot' which could either increase, or decrease, the price depending on the material, or who your making it for
4)Enchanting heated blades/blunts/shield by placing them in another 'work station' that you can load those worbedy florbedy crystals into above said 'craft' to enchant it over time like heating the ingots, and potentially allowing for repeatedly running the process to make the enchant stronger
5)A 'list' of things that will be picked up at once (like an 'invoice order' kinda thing)