I've watched the cinematics a few number of times. Done the loyalist arc as well.
Besides overall mess atm and no real conclusion to the whole story one thing really bothers me: How the hell Nathanos managed to get out of Orgrimmar?
I mean, he is standing on the walls of Orgrimmar just before the cinematic plays. Then suddenly he is at Windrunner Spire with Sylvanas. Did he get the hearthstone as well or? It would be improbable that he actually managed to just flee Orgrimmar like Sylvanas did in a cloud of smoke, especially with all gates surrounded and having Orgrimmar full of mad former loyalists after Sylvanas' outbreak.
HOW THE HELL DID HE GET OUT??