Hi JTB, unfortunately those are a lot harder to do. I think that I will be able to get those for v3 but they aren't something that I can whip up easily for right now, unlike surface from 3 or 4 points.

But check out this thread for some discussion on different possibilities for Terrain:
http://moi3d.com/forum/index.php?webtag=MOI&msg=2321.1

- Michael