As an adv with good runspeed for my class and lvl, fully buffed, I'm unable to outrun green mob's on my way to mission. This is ludicrous! Worse even: In spite of my high adventuring skill, the mobs are continuosly on top of me in difficult terrain; they warp 20 meters for every meter they run!
When the mobs are borderline what you can fight and win (or higher), running is not an option because that'll allow the mob a good 2 or 3 hits before it becomes clear that running isn't working. So the situation now is that running is implemented in some mobs, but made impossible for players!
If anything, difficult terrain should be to the advantage of the pursued, not the pursuer. That's how it works in the rest of the universe...
This effectively nerfs solo exploring and solo outdoor hunting. It also makes it very difficult to reach missions unless you've got a yalm, which pretty much §&r#ws the newbies... This is not good!