I dont know its not that hard I mean take Tera for example, all but 3 races are gender free, the skills and spells Graphic set up is quite nice and still allows for a massive pvp enviernemt. sure ppl lag a little but again who in the great given earth doesnt lag at one point or another?
in the end with a little work and more time you can easly get stuff done the better way, not just the easy way. in the end if you think about it, you do everything LONG before you let ppl play it, then most of the work is already done, its just maintaining the games from bugs, glitches and the support line.
anyways if you petition it long enough and you get enough backup for it, I'm sure the content can be added.