I'd take a functional glamour system in a heartbeat.

No more of this having to store items in your inventory/glamour dresser/armoire, it all goes into a glamour log and you can discard the physical item once unlocked (GW2/WoW). Being able to design/apply plates from anywhere (XI). A dye system that allows multiple channels, and everything is dyeable (GW2). I'd take an unlock-once-and-done dye system (GW2), but if that's too much, I'd settle for letting us have a dye inventory where we can stockpile all the random dyes in one place. Having an option to look up/try on all available glams/skins in-game (GW2).

Yes, yes, gonna be a greedy mofo and ask for it all. :3