My Landscape/Enviroment wip (heavenly inspired by The Witcher 3 demo videos)

Thx for the heads up! Much appreciated!

Started the procedural thing with the material already but the material is complicated. Is there a way to trow a material in the material?

For example. Can i use a rock material with diff speec normal ao in my terrainmaterial or must i do it with layerblends for normal speec and so on? Would be nice if i could trow a ready material in.