I think this would improve the immersion of the world a lot, and expand the space in a nice and diverse way. Currently, PS seems to have about 4 cities (if BD can be counted too) and in between them, empty hills you travel on. I've been thinking about how that could be continued, and what new outdoor areas I'd like to see most (that don't look the same as the current ones).
I think it would be awesome if a desert area, a snow area and a forest area could be added. This would make the environment much more diverse and immerse imo, and players would get to spend time in different themes of landscapes. I'd personally go with making all of them very large... possibly as large as the whole landscape around the BD cave if not even larger than that

The desert area could have a city of pyramids somewhere... possibly with an underground temple of that theme too. The snowy mountains could host a huge ice / crystal palace (or a large palace that gives such a feeling) like an enormous cathedral with many rooms and levels. Forests could be like the current hills, but all covered in huge trees that you navigate between, everything complex and covered in plants (possibly with rays of light shining through the trees). Those places could either host new cities, or large places that you can visit (like the BD fortress is). Now that weather effects are coming too, this would also offer a place to permanently snow in, and a place to have some sandstorm weather.
As to how each of these areas should be linked and located... I have a good idea about that too. The desert area should be accessible from Oja in my opinion. That's the city with the best desert / arabic theme. Possibly through the door in the back (the round door opposite to the entrance to Oja). The snowy area would likely be best put near the BD fortress. A huge cave like that is likely the best place to access a huge snowy mountain from, possibly from one of the cave walls. As for the forest, I'd go with making an entrance from the current forest paths (where Levrus and the magic shop are located, possibly from behind Levrus's shop). If a city in the forest is to be made, that could be a great spawning spot for the elf species (the human females with blue skin... I don't remember some factions by name sadly

).
I'd like to try helping with making some of these zones, since I mapped for different games in other editors. But I don't really know if I can do it, especially since I can't test maps or code on my computer (although I could try to model them in Blender and ask someone else to put them in PlaneShift). If there's any chance for new places happening soon, those are the outdoor areas I'd go for most, and hope at least some of them can happen
