Just a thought... Is there any valid reason that Garrosh hates the Alliance so much? Obviously, he is Horde but looking at in perspective you notice that he is the only one who displays absolute rage towards them yet however has really no reason except that he is on a different faction.
I mean for god sakes Thrall has more of a reason to hate the Alliance than Garrosh does. The Blood Elves have a better reason too, I mean it doesn't make any sense. Varian on the other hand does have a valid reason to be a douche bag to the Horde but that doesn't make it right. I think Varian and Garrosh both have e-peen issues but are both very interesting characters.
Garrosh came to Azeroth from Outland after everything was settled and peacerful. What the hell does he have to be so angry about? The guy is a moron and should be shot.