Or the 5.1 rep quest line. Or the TBC Champion of the Naaru line. The could have sent us all over the Broken Isles, getting objects that Khadgar would use to cast a spell that let us fly. There are tons of things that they could have done... instead it's a cheap, pathetic copout - Oh, get revered with 7 factions (or whatever) and then jump through this other hoop that has no connection to your inability to fly...