Found these two quests, which I hadn't seen anyone talk about (and a search didn't return any results)
The Last Gasp of Y'shaarj
Why Do We Fight?
And people have already been talking about: The Usurper
So, we know we completely destroy the Sha and Y'shaarj. We know we receive a reward for ending Hellscream's reign. I think "Why Do We Fight?" will phase the Vale and show it only partially damaged (maybe Sha corruption is gone, but physical damage remains -- but what would this mean for the Dread Wastes ?)
Could it really be anything else he wants to show us ?
And how do we possibly arrive at The Last Gasp in the first place ? Just a quest after we defeat Garrosh ?
I can't recall ever being in greater anticipation of what the lore reveals in a raid will be. Actually I don't think I've ever had the thoughts, "I can't wait to see what happens with the story" for a raid -- it's always just been, "I can't wait to kill (the big bad at the end)". Here, all sorts of questions remain even with the PTR already raid testing.
I am excite.