About shadow-baker.
Talking from my expirience, as I am using one 1024 bmp for terrain texture and detail map, good workflow will be to bake shadows into terrain color map. So you can make that as option for people who are using smaller terrains. Also you can leave option for making shadow map to use it with multi-tex terain shader.
So either option you make Ill be very happy and it will save huge time in terrain creation.
Curently I am using freeworld3D to make terains and there I need to place all models, make shadow map, bake it into color map, export height map, imrot into med, and place all models again. So you see how huge will be time save.

Option for different heights for coloring mountains in white is feature which freeworld has, so it will be very nice to implement it.

So I think if you make all this feature we will definitly use iceX only
Thnx