guys, Thrall is never dying. Just accept it.
Honestly this is the first time I wouldn't be so sure. Unless he gives you the Doomhammer and then sit somewhere for the rest of the xpac, which would be really dumb.
But aside from his weapon being available to us (and sorry but the whole fighting with the mementos of our fallen leaders thing is too good/obvious to be stupidly avoided...then again this is Blizzard) I'm saying that because I think they will kill Varian and they'd have to reciprocate in the other faction, so Thrall.
(Vol'jin wouldn't cut it, unless they kill him with Jaina?)
Reasons why I think Varian will be blown up:
-They never knew what to do with him, being an angry dumb brute then level headed and then suddenly the perfect zen leader inspiring confidence....neither were convincing at all. They obviously said screw it during MoP where his son occupies the stage much more than him, and being set up as his replacement.
-His weapon is too good of a candidate for a warrior artifact, and he wouldn't give it to you.
-Anduin has a new model and his description is talking about "paying the price"
-Genn Greymane has got a new model and is suddenly relevant. He's also a human (well, previously) king and could take over as a regent while Anduin gets his shit together
-in the announcement video Varian is the only one made aware of the Legion's return, and something about how they show the look of fear on his eyes made me think of foreshadowing, but I might be reaching a bit too much there.
And screw it, we need Varian and Thrall dying side by side while battling the legion.