Just a reminder once again that I do have an old Super Metroid map if you're interested. I don't know if TEdit will work with the update though, so if we can't paste the map into a new world (it takes up a tiny portion of a large world), I'll scrap plans for it.

I would be in favor of some civilization and some wilderness. A place to let players go and mine, or build homes with mines beneath, and other places where they can go and find each other. In short, think of it like all the NPCs are in a "city", and players can go there for them.