I hope Garrosh gets some form of "redemption" in the end; i.e, sacrificing himself to destroy Y'shaarj, or somesuch... Having him go full ragemode and us just killing him would be very... underwhelming.
Anyway, I'm a little miffed that Jaina, Aethas, and/or songweaver don't appear to be bosses...
Also, no giant faction champ-esque showdown between all the faction leaders? That would have been an insane boss fight.