I believe Thrall will die in this expansion. It’s unlikely, of course, but I think he will. Trying to save Baine, he gets shot full of holes by Sylvanas and (because he has no shamanic powers) can’t really retaliate. Saurfang will take his armour and start a “new” horde, with orcs, Tauren and some other race- one who are mega pissed at Sylvanas.. (Not sure which, though.) They all go off and have their own “old horde”, which are all for honour and the peace of Azeroth, while those who are all on board with Sylvanas go off and have fun times by themselves. This probably won’t happen, but I like to think it will- just for shits n giggles.