If you haven't seen it by now, this is the amazing new Rexxar NPC model. However, if you look closely at the animations and structure itself, it doesn't appear to be built from an existing model or animation set, and if it is, it's heavily modified.
Now knowing Blizzard like we do, they are not going to be putting that kind of work into an NPC - that may I remind you isn't even a faction leader - if they have no other plans.
To me it's quite obvious we'll be getting Mok'Nathal as an allied race. So 2 questions, 1) do you agree? and 2) what would an equivalent alliance allied race be in your eyes?
The answer to that second question for me would likely be Arakkoa.