Why dont you sell appearance changes, like human mystic to human fighter, orc mystic to orc fighter and vice versa, this doest need intensive programming because you already have it (since destiny stone shows up a lot of hummans fighters are healers/summoners and orc mystics becomes main class tanker/tyrr) and will increse the NCSoft cashflow
Just no, appearance influences stats and it would basically be like a SoD for races...
appearance dont change stats, like a human fighter tank with an aeore healer dual class, have the appearance of HUMAN FIGHTER but with HUMAN MYSTIC appearance, it will just be a cosmetic change, no stats involved