Since the armoire seems almost pointless in the current iteration of it in the game, I had the idea that it could be used in a similar way with how the new "check mark" system does with pets/mounts:
  • Any item you want to store without alterations, you put in the armoire, then that item will have a check mark on it if viewed on MB or inventories, then any alterations (dyes, crests, etc) can be done in the glamour dresser as usual.
  • Any items you want to store with alterations intact, are put directly into the dresser. Afterward, they will also appear with the check mark, and the unaltered version will be available from the armoire if you remove the altered one from the dresser.

I feel with this change, they could even reduce the items able to be stored in the dresser, and it may reduce a lot of stress on the server end. I haven't played WoW, but I believe this is similar to how the transmog system works.