I know but thing is you can actually automate a lot of the base work. Leaving only fine tuning and sprucing up.

http://neverwintervault.org/project/nwn2/prefab/area/terrain-importer-3-v123

Take a look at this little thing I brought back from the grave and improved upon. With just a heightmap I could generate a simple decent looking terrain in NWN2. Having something like this for divinity would be great. However since the editor doesn't seem at first glance as flexible as NWN2, I have my doubts it will be possible. But doesn't hurt to ask now does it smile Their offices are only an hour and a half from me so I could ask personally but that would just be ... "weird" :p