Here's what I'm considering the final version from this POV.
@Dune Can't easily change the snow fractal to be softer because of the displacement method (it would have to be done in the terrain, and that changes everything too much), so I've gone for turning the snow into very icy snow, which I think works fine).
As a side effect when making this I've come across a method for placing snow on top of fake stones which looks really cool. Need to experiment a little more here.
This POV is ok for me but there are lots of others I want to explore plus different lighting effects.
Thanks for the comments guys, much appreciated.
thanks also in this version to TerrAde for the snowy fence,