So before we start, please throw away any notions of Kil'jaedan, Sargeras, Argus, or Outland. This thread is going to focus on next expansion NOT being the Legion, and instead being a "filler" expansion with Azshara and the Great Sea.
So we got an Alliance Race thread bumping around that's full of talk of High Elves, Furbolgs, and Ethereal. But there's no Horde thread in sight.
I know if next expansion IS a Legion Expansion, it's inevitable that Horde will get Ogres. But what if it's not? What if Blizz decides to have Argus be their level 100 Expansion, and also decide not to break from their current 5-level expansion system? Well they'd probably put Azshara and the Great Sea in, due to her link to the Legion already.
But would Ogre be a good fit? Or would Blizz add something more related to the Great Sea?
Like a Murloc?
What about a Hozen? They come from Pandaria, and would go well with the (presumed) Alliance race, Jinyu?
Or the Naga? They could break away from Azshara and join their Highborne descendents, the Blood Elves.
Something else entirely? The choice is up to you, poll incoming.