What do you do to fill in voids? I try to keep every area interesting with something new to explore but I run through all my ideas pretty quick.
One half (right) of the green area will be filled with nature only, otherwise the map would be spammed with to many spawns.
On the left there will be spawns like hunters, maybe some kind of pirate bay, cyclops or even some undeads (I actually didn't decide which one will fit better)
The yellow box will be filled with an orc fortress and some kind of magicians that took over control
Ice region: some kind of spawns, like crystal spiders, some giants, trolls and stuff like that
Desert: well, there aren't many possibilities in a desert. Another tomb, some small camps, rotworms, minotaurs... nothing special in the next release
Almost every area has some kind of secret pathing to a hidden place or a cool story that inspires me to work on it. Not every area needs to be great as fuck, I think there are many very simple spots on my map. Even a broken bridge can attract people.
I think it's hard to explain, because I map spontaniously, just like... "Oh wait, that would be cool. I'll try it out."