I would like to see a less clustered wilderness in the next series. One of the things that annoyed me and actually made me use fast travel was how full the wilderness was with NPCs and creatures. I think more NPCs in towns and villages, and very few spread out in the wilderness would make for a more realistic and pleasant travel experience. Another issue I had was with running into creatures all the time on roads, and even in the bush. It's rare that you run into many creatures when hiking because most things that hear humans coming and aren't starving will avoid them. This is why you're told to be loud as possible when hiking to avoid bears. With a more empty wilderness, except perhaps at night when things become more aggressive and wake up. especially the monsters.
I personally think it'd be more creepy to hear things but never see them, and the realization you're all alone in the middle of nowhere.