Here is my factorio world. Very high water and cliffs, resource frequency high and richness high to offset most of the resource spawns being underwater. Enemy settings equivalent to those in a death world.

My old starter base is in the center, mostly abandoned. My main factory is entirely built in the water on the right side. Lots of landfill was required. Most borders with aliens are at chokepoints. Can see legacy rings of defense for the old base, too. The insane geography has been very fun!