There are only three changes needed for glamour dresser:

1. Have enough plates for each class and job in the game.
2. Have the plates be accessible everywhere (except maybe in instanced content, but if possible, inside there too).
3. Allow it to store dye options that can be used on any and all slots on all plates.

However, there is another change that must go along with it, and it's not to the glamour dresser, but to the armoire:

1. Make the armoire be a character-based appearance collection that stores the appearances of all gears that the character has ever possessed, but remove the ability to restore item.

(The glamour dresser retains the ability to restore items, but is the same feature as it currently exists so people has to choose what gear they want to be able to restore and they can't just multiply gears.)