If Blizzard has some encounters and battles they want to present in a certain way from the ground, fine. I'm ok with that. Dungeons and raids cover that pretty well. I enjoyed Firelands, leveling up from the ground, and other such no-fly areas. But the idea that it's the
ONLY way to present content, especially within the scope of an open world, is ridiculous, especially given the example of TBC-MOP, where flight existed without anything breaking.
Because...god forbid...the open world is actually open.