What we need especially:
- people who figure out the best way to generate heightmaps and splatmaps
- people to write shaders for Terragen 2 for good-looking land-types (grassland, desert, plains, mountains, etc. etc.) - I will gladly provide the shaders I made for the image above as starting points
- people who can make models of cities and towns. Low-poly, to-scale. Nothing like this seems to exist on the market. This page contains some inspirations, from the boardgame Mighty Empires.
- people who tie everything together, figure out the best ways to import/export from the various tools in the workflow, etc.
Doesn't Terragen give you a heightmap?
As for splatmaps, in the process of finding out what they are I came across
this. Not sure if that's what you're after.
I've asked a guy I know from the Games Design course at my uni if he can supply/create any, he's pretty good at low poly work. He'll probably just want crediting for it so it can go into his portfolio/CV.
Here is his stuff.