Honestly this really doesn't bother me too much

Honestly this really doesn't bother me too much. I only really miss flying in Pandaland when the quest objective is in some complicated mountain terrain or something. One thing I would implore Blizzard to consider though is not to pack too many mobs together into one area. Once you hit Townlong Steps it's all downhill from there, don't even get me started with The Dread Wastes. This doesn't make it feel dangerous it makes it feel poorly designed and frustrating to the point I don't want to level any alts. Getting knocked off your mount by one or two monsters is whatever but getting bombarded with 8 mobs that fear you into a pack of another 8 mobs isn't fun.
wow gold farming
But as far as the mounts go while leveling I figure it's a lot like speeding on the highway. You're really not going to get there all that much faster.