I've got a suggestion about items

I've got a suggestion about items like Jade Raccoon that have stats. Have a vendor that can "buy" them for the original + some amount of gold (based on item level?) for one that is purely cosmetic that is compatible with the ToyBox.
po world of Warcraft
Basically it'd be similar to how the old 1-80 BoA armors are exchangeable for the upgraded 1-85 version for the original item + another currency.