If any of their reasoning behind why we can't have better customization is true (like separating aura horns and faces can't be done because character data), then I would actively hate them adding a new race instead of spending that character data on making existing characters better.

Adding a new job I don't want to play is probably not terrible but could be similarly annoying. It's tough to imagine a job I would have no interest in at all, though.

A new region is fine because I'll probably only have to play in it to level up and then it's out of my life forever, just like all the existing zones.