first I have no experience with shaders, so I'm sorry if I sound like having never seen the third dimension...

1. Will it be possible to change the parameters in runtime by a script?
So we can write our own Shader-editor and save the params?
2. Will Hair,Gras and Fur be possible?
I've seen samplepics at Pixars RenderMan Page
3. Will it only visible at a Skinmesh or also with particles? (glow/fire things)
greets
3DSim