Anyway, there are plenty of ways we can make progress without getting rid of the Sha straight away. The Mantid, the Mogu, the Zandalari, etc etc. It just seems to me that the Sha are the biggest threat here and tie in the best to the message of the expansion (i.e the pointlessness of the Horde/Alliance war.). It would seem odd to get rid of this thematic link so soon. I also think having Garrosh corrupted by the Sha would actually be an interesting twist on the whole going crazy thing. The Sha doesn't corrupt in the traditional sense, it amplifies what's already there.