The "Brokers" or whatever in Oribos look particularly cool. Very obvious "Dead Cells" vibes, but sick all the same. I'm also pretty taken with the Kyrrian, even though obviously there would have to be some pretty major advancements in the story to allow for them to be playable (which goes without saying for most races anyways, but they in particular are a little dicey).
I remember reading an idea once that maybe you could have a "race" that is essentially kind of a "blank slate", but based on which Covenant you join, you would change appearance to suit them. That sounds like kind of a programming nightmare, but it also does sound kind of dope.
Only way I could see it making any semblance of sense is if this expansion ends with more build-up towards the "Void Lords", in which case perhaps in repayment for the deeds of Azeroth's heroes, the Arbiter would agree to send a few of our Covenant friends back to Azeroth, complete with corporeal forms.
What about you guys? Thoughts?