Flying breaks the game moving forward on future WoW endeavors. Why try to throw 5 band-aids on it when the best solution is it's removal. Flying isn't a need, it's a want..And we've had them for awhile now and the thought of losing it gives you withdrawals...Pretty sure you'll live.
A lot of changes being made in WoD is most defiantly a step forwards in design. A lot of going back to the foundations what made this game a success to begin with.