To give crafted items a higher market value, allow crafters to add unique enhancements to items that would not normally accompany dropped items at no cost of materials. higher leveled crafters would be able to add more significant changes to items. crafted items could be set in tiers too. enhancements could be extra dye slot, guild emblem slot, name inscription slot, decorative slots, custom stat slots, extra refinement stat, higher quality stat, chances of higher yields (more than one item created(some higher and some lower quality possibly))…(add you own enhancements here).
This will help make crafting a more lucrative business for players.