Originally Posted by
Fleugen
Or we could just have quest mobs, bosses, dungeons and everything run to us. Ultimate convenience which is obviously the best thing for the game, right?
I'll skip waiting for your answer since I already know it. No, it's not the best thing for the game to have ultimate convenience. The game is crafted in such a way that convenience is levied against what is fun.
It is generally not considered fun, and was often complained about at long length on the official and unofficial (Read: MMO-Champion) forums that it was not fun to mount, go to a mob, kill it, mount again, go to a mob, kill it, mount again, etc. Blizzard looked at this, weighed the responses, and decided You are right. This is not what we intend our game to be. This is what prompted the stance they have taken.
You want to run all the way to highmountain, taking significantly LONGER to get the quest done, just so you can skip the content? Go for it, you're actually inconveniencing yourself that way.
"But why not add flight instead?"
Because it makes it too easy. Because not everyone has access to the gliders, the slow falls, the many ways to skip the content that you've mentioned. Because when you can mount up and skip everything at will, instead of doing things the right way the first time and figuring out the skip-strategies later, Blizzard needs to account for people having the ability to skip it all IMMEDIATELY. The 'right way' becomes the 'skip way.' There is no way to design good content that ALWAYS includes flight. There are only so many ways they can design content around flight. And, funny enough, most of them have already been tried and found EXTREMELY LACKING.
Vash'jir is an example of 'flight content' seeing as it's an entire zone where you effectively 'fly' at all times. (Swim technically, but you have full 360 degree motion.) It is by and large considered the worst zone to ever exist in WoW.
Prior to that, Wrath of the Lich King was going to have flying vehicles for combat in Wintergrasp. I even still have my original Wrath box that STATES THAT. It was removed from the game due to massive bugs and clunky design.
Even MORE prior to that, BC had cannons that would shoot people out of the sky when flying over certain areas. These barely functioned as intended. They either ALWAYS hit you and caused a massive disruption due to being unable to complete quests, or NEVER hit because it always targetted where you WERE instead of where you were GOING.
There is only so much you can "just design around." Flight is something which has gone through multiple iterations and was found lacking in every single one.