Now now. I'm sure there exists penalties out there that can penalize players for trying to outrun unmounted enemies while on their mounts that are less annoying and still get the point across. Frankly, I can just use Fist of Wind on my monk and run through a crowded area without taking a heavy penalty anyways... I've been doing that more and more these days not like these level 40-50 npcs are gonna kill me while I'm running anyways lol.
But the mount is still faster and cooler... hmm... Plus it wouldn't be such a huge issue if it weren't for the fact that nearly everywhere I gotta go in the overworld has obscene amounts of aggro like the Sylphlands all I gotta say is helloooooooo aggro... meh