If I may, the one thing that strikes me in the current outdoor zones is that they are very sparse and plain. You've built the basics of the outdoor world, but they just don't seem complete, to me anyway. Just as an example, I've hear rumors of farming taking place, yet there are no farms anywhere. I would also like to see more vegetation and landmark type features. And maybe bound the outdoor zones with billboards of forests or mountains/fog so you don't end up looking out over nothing so often. There are also a few scenes where houses seem to float in the air when you put render to max distance on that could be cleaned up. Weather?
And there is also descriptions of flying mounts and caravans to speed up travel between cities. Has any thought been given to those animations? Before you consider expanding the world again, you may want to address these ideas.
BTW, I voted to beef up the existing zones, so I'm just following up here with my thoughts.