And what did any of these characters have to do with the elements, which was a big theme of Cataclysm? If you don't understand the concept of characters being appropriately used in certain situations, then please stop this. I more than anyone would love to see Khadgar, Turalyon, and that whole lot more, but much of the story has not really had a call for them. Having them come back after the conflicts of Mists simmer down would, at least in my opinion, be a good point. It provides conflict, as I'm sure many of them would be against the Horde still, and yet if they see a new peace (even tentative, which is what I'm expecting), they will have to deal with such. Again, however, Thrall has been set up for years to be the guy to save the day during the Cataclysm. If you can't see that, I'm not sure how my words will get through to you.