Until they make the game less hostile towards the idea of having alt characters (ex: cross-character item/gil transfer, more achievements/rewards unlocked across account), I have little to no interest in new races at all. But yeah, if they do add a new race, I would like to see viera in the game. I'm a big fan of FFXII, Tactics, and the "Ivalice" flavour in general. A lot of things about the world of FFXIV often feel like "Ivalice lite" to me. Bring it on!

Oh, and if they do introduce viera, can Fran and Balthier please make a cameo appearance? Bonus points if Balthier meets Urianger, and makes a comment about his voice seeming odd.