The tailors should sell the crafting materials. In the very least cloth should be sold. Thematically it makes no sense to not have basic cloth for sale. Additionally, unlike wood and ore, there is no way to farm cloth short of random drops from enemies. I have been trying to upgrade a cloth set for several hours but I have not had a single cloth (refined or base) material dropped.
Other suggestion is to allow turning finished products into a small amount of crafying materials. This would make crafying a weapon that has poor stats slightly less painfull as you could retrieve some of the cost. Even just 1 of each basic type (wood, ore, cloth, or leather) would be beneficial and would make players have to decide between selling unwanted equipment or getting more materials.
Please allow for the use of rarer materials in place of lesser materials. I would prefer a 1:2 ratio but even a 1 for 1 would be preferable to the current state. It really is irritating to have to farm copper for upgrades when I have 20+ iron ingots and I am struggling to collect enough copper to craft then upgrade a weapon to the point that I can actually use my iron.
Lastly, please change the rune and enchantment options to allow runes or enchantments to be redone. To keep players from exploiting redos, have escalating costs for each change or rare materials that are explicitly for the purpose of redoing these things. It is extremely frustrating to waste good equipment with good stats on a bad enchantment. I understand it is a gamble but it is overly punitive currently.