I managed to get it to be a meta node too- yeh! (only a couple of crashes, I think one may have been because I included the input node in the meta node by mistake, still -  shouldnt crash)
I'm not sure about needing a different scaling factor for the  procedural terrain. If we want a different relative scale for the HF terrain we already have the parameters in the brightness/contrast node and the smooth map node.  Why do we need an extra variable? I thought it was important to keep the same scaling for both terrain types.
I must admit I dont yet fully understand the values in the smooth-map node. Where does the '22' come from...
I think I need to test how it works in a real situation, but I rather get my method (defining the position rather than offset ) working first.

Yes- good collaboration, I enjoyed it!

"I paint that which comes from the imagination or from dreams, or from an unconscious drive. I photograph the things that I do not wish to paint, the things which already have an existence."
Man Ray, modernist painter
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