Not just basic cosmetics like transmogs but the full blown cash shop quality mounts. enchantment effects replacement animations/effects for spells and cosmetic armor. Things that really make your narrative choices stand out among other players.
Would this system make everyone happy rather then the weird facebook/phone game power systems we find ourselves with today? It would make power minded high end players happy to not have to sim out extra things beyond gear and would give the rest of the player base a host of customization options.
Seems a win-win no?