I wouldn't mind a separate glamour system like what Guild Wars 2 has. After you've acquired a piece of gear in that game, you "unlock" the glamour for it so that you can apply it to other items, and you no longer have to keep the item around.

If FFXIV had a simlar system, I could imagine that once you apply the model glamour, you dye the item separately. Heck, turn the armoire into this kind of thing. I'm sure that would save tons of inventory space.