Here's an update on the snowscape, and a screendump of the settings so far (in the next block, as it's too big to upload, apparantly). Why not share this indeed, it has so much potential for all who use populations... Lots to play with again. I prefer making some image maps, as I find the painted shader a bit fickle, but they both work fine, with some tweaking.
If you place your extra camera within the object nodes, it'll serve as a shortcut to the bowels of the tree from the camera. Faster access.
---Dune