Yeah, I don't think it would ever happen. They would have to start a high level because it wouldn't make sense playing a Garlean in ARR or really in any content - MSQ or otherwise. That's probably the chief reason we'll never see it.

I was just pointing out to people saying Garleans can't use magic as a reason you'll never see them playable can be easily remedied by SE if they ever wanted to do it.

On a personal level, I'm not crazy about this idea because I already main a hyur. No reason to add another "human" race.