The shading is overdone, I think. On the larger polygons such as the bottom-right of the map the method works well, but it's exaggerated way too much on the smaller floating boulders.
It's a shame to have done all that work on the surface of the desert and only be able to see it from the overview or a map editor
You should allow soldaten to actually fly up there (no spawns, tho', must get up manually); that would be great. The trailing water is also really innovative.
Good work