I would love to be a Vampire. I am a huge..huge...HUGE Vampire lover. You guys have no idea. lol
If the race would be able to be 'played', I would want to have some sort of levitating power, or have a Sprint ability for endless amounts of time (Kiss of the Viper NIN ability - endless, unless you take it off manually). And by God, I would love to have myself flying! If Ishgard/Heavensward can implement flying mounts, then why not us characters having some sort of class, or a way for US to fly as well?

Remember guys, this is Final FANTASY....ANYTHING can happen.