I've got a Med test post going in the terrain editor forum that I'll update as I work on things I'm testing to create topo features for a rift valley. Once I finish my testing, it should be alot easier to drop in the land mass pre-setup in elevation blocks by creating a basic heightmap file. There are 3 key elevations I have to convert to gray scale values and I can convert that into a basic heightmap. Since it's created on a 4096x4096 workspace, it is 1x1 8pixel=1mile. Then sculpt, which the worst part of that is making it look random. Sometime because the smallest building block of the terrain editor is 1\8x1\8 mile, lego blocks come to mind.