Thanks guys
"Who knew the Nephilim were setting up franchises on Arrakis?"
Haha lolz
"You know, if you add Soft Minimum Clamps to the end of all the dune core functions, you can get soft dune tops."
That sounds cool. There's a 0/1 switch in the P (profile) node that allows you to switch between sharp and soft dune crests but there is no half way, it's either/or. What are you feeding into the second and third inputs on the Soft Minimum Clamps node?
I did get a similar result by simply merging (merge node) two dune groups (one with soft and one with sharp crests, but it seemed a clumsy implementation.