I had started the subject in the General Discussion Forum but this part concerns more the licensed users.
I have 3 major suggestions for improve the shader creation in octane
1)add a shader mixer to have a single mesh with multiple materials and shaders.
2)add falloff parameter for mixer and maybe shader mixer

3)add different mods of fusion for mixers. (normal , multiply ,overlay , screen ...)
let me know your opinion or your tricks to override those limitations.
Regards
Edit : Thanks to the octane developpers , you made our dream a reality.