Could you explain why the wardrobe system works for backpacks, themselves an accessory, but not other types like amulets, earrings, and rings? Or is it merely a matter of volume and the wardrobe currently can't contain the number of available trinket skins?
The wardrobe doesn't actually track items, but rather the art that they reference. Backpacks are in the wardrobe, because they have a model, while other accessories don't. Aurora, along with the various jewels and infusions with visual effects are set up in a different way that doesn't interface with the wardrobe