With the obvious demise of Garrosh Hellscream looming over us, we've come to accept it to be as much as an inevitability as death and taxes.
But Garrosh was the son of a great hero of the Horde, (irrelivant of all the bad things he may have done) and the name Hellscream may find itself dragged through the dirt in the coming patches. It seems likely to me, especially considering Groms' best friend is now one of Azeroth's 'best shamans', that he'd make a spirited appearance to set the record straight, maybe even to strike venegance at the heart of his son's corruptor.
Will we see a scene which will look almost exactly like a greenskinned version of the ghost of Terenas holding his dead son, Arthas?
Will the raiders of ICC shit blood over a 're-used' concept?
Would you like to see Grom with a fancy new model?