I think I am done with the shader. I ended up making one very big master material, with loads of static switches according to which features you want to activate. This is with everything on!
I wanted to make the snow more realistic than the classic Y+ shader, which only really works for very fresh snow, now you can also have packed snow in specific places, allowing to have old snow that has been staying for days. Furthermore this may make the material useful with many other blends, such as sand, stacking up in the corners!
Here is an example of different kind of snow looks you can achieve :
If you have any feedbacks on this shader, now is the time, I’m going to stop iterating very soon, because I know I could go forever if I don’t put an end to it! 