Issue: It is cumbersome to have to store each type of profession clothing (Smelter, Armorer, Weapon Smith, Engineering etc.) and constantly change sets as you run around town doing your daily crafts.
Solution: A new furniture piece - armor racks - that you can place in your house to showcase the different gear sets / dungeon sets that you have collected. Any profession gear that you place on these racks will act like a trophy in your house and the +2 crafting or +2% yield buffs will be applied to you as long as your housing upkeep is paid.
I would think this is an easy thing to implement and would be a MASSIVE quality of life upgrade for players.