I'd love to see this too! I liked alot the FFXI skins and the 4-focus gradient we had in FFVII. And they could even reward different skins from events and stuff or even add a template for player-made skins, just like programs like instant messegers do, offering a file with the number, dimensions and names of the images needed and a folder where the player need to place the skin for it to become selectable ingame.