I'm trying to do something similar to skylands, on a smaller scale. (Started before I played skylands, of course, but yeah) And I'm making a bunch of places to create a singleplayer experience. So far I've got a small settler's village of sorts built around a fort, a chasm to the bottom of the earth with a spooky bridge, an outpost, an evil nether temple (buried in sand) and a graveyard, allllllll out in the desert. It's not much, but I'm still coming up with ideas.