Considering it's optimal to have only 1 character in this game, we'll most definitely see Phials added to the Mogstation sooner or later. It's inevitable and a good thing for people like me who like looking at new things once in awhile.

FFXI didn't have it, and you know what the majority of the PC player base did? They used Windower to change their race on the fly. From a business aspect, it would be silly for SE not to tap into the rich vein of cash that is Appearance/Race changes.