The biggest problem with this expansion as a generalization, and its evident in the No Flying vs Flying debate, is a general lack of compromise on any hot topics in WoW.
You have a ~20+ page post about the Legendary Ring on the Forums predominantly disliking its design. However, still some people like it. Some people want it to stay the same simply because "It makes all of these nerds mad", loose quote from that thread. Instead of finding a compromise to deliver to both sides at least SOME satisfaction, that ring will probably just be implemented as is.
The Flying vs No flying is the same thing. Isle of Thunder/Timeless Isle were pretty substantial design successes. Personally, I like being able to kill people when I want to which is why I dont want flying. However, it's not a big deal one way or another. Why can't Apexis Daily areas, Elite Quest Area's, Garrison Campaign Area's, Tanaan Jungle be no flying and everywhere else be Flying? Or just SOME compromise to appeal to both sides. The kick to the balls are their reasoning's to all of this, they want the world to be "Dangerous". Okay, great. I want that too. It doesn't change the fact that the world is NOT dangerous. It doesn't change the fact that leaving your Garrison is generally only done to raid. Wanting the world to be dangerous, and the current Warlords of Draenor world being dangerous are not synonymous things. Blizzard failed at making WoD a dangerous world. Don't use a failed design as an excuse to retain a design idea that you personally want. It just makes Blizzard look stubborn and incompetent.
And thats what it comes down to. Blizzard has just been stubbornly doing whatever they want. I mean, it's their game so they CAN do whatever they want and you can't really argue against it at that point. It doesn't change the fact that by developing and progressing the game in this fashion just makes it feel like the player's are having their faces spat in. "It's our game, we do what we want." Is what it feels like right now.
Anyone who remembers the talent overhauls in Vanilla, the PVP and PVE changes in BC, the class changes from expansion to expansion up to about Wrath will remember how progressive the game felt. Player's used to use the forums to discuss class idea's and often the Blue's would come in and give feedback to them about it. Spell Reflect was proposed in Vanilla and became a thing in BC. Death Grip was actually a player proposed idea for Paladins to give them a flavorful Gap Closer. Something Different from Charge/Sprint. There used to be this feeling of feedback being relevant. Now I see the 50+ page State of the Game post and I have no confidence in Blizzard working with player's to deliver quality content anymore. Ashran is the pinnacle of an example of player feedback being largely underutilized and instead just doing something random. I will not forget the face Holinka and Lore made when someone asked "Why would we do Ashran when we can just get the same amount of points from a single 2's game." and their response to it was "Well, you have to do Ashran to cap."
Seriously, go watch it. They look like they had never said it out loud before and it finally dawned on them how stupid of an idea that is.