So your entire issue is with a new design direction being taken by the Dev team. A direction they've wanted to go for years, and have said as much. Seems like you are facing an impossible uphill battle and the other side just don't care. 2270 pages later in a Draenor flight thread and Blizz still didn't care. In fact, a mod closed the thread 2 MONTHS before Blizz decided to add flight. At least it is coming in 7.2.