When using metal weapons, it is important to balance need vs resources.
Using a weapon which requires 3 ingots to kill some goblins, means wasting resources.
I do agree though that the other materials are too easy to handle.
Leather is somewhat fine because you need a lot of time to make it.
Wood at least requires you to get a cart and go around chopping trees, but it should have a processing step or its value is almost zero. After all you can't make boards out of fresh wood, you need to let it dry. Adding a facility to store and dry woods could be a good addition.
Medium armors and cloth armors are a complete misfit with the rest of the processes. They both require you to just kill a mob, gets its skin/fiber and you can already make the armor. The value of such an item is zero. Takes no time or effort.
In my opinion, hide armors should be limited to primitive items. Medium armors should be made of leather and a little bit of metal (Studded leather?).
For cloths too I would like to see a processing facility added. Have them macerate for a time before weaving. This way they become similar to leather as a resource. Easy to acquire but require time to be processed.