I'll do something about the rocks. In fact I was experimenting with extra displacement after the fakes stones, blowing them up according to a mask, but I got carried away. This may be a good time to add some stone objects as well, hardly ever used those.
I don't know if you know these stars, Mahnmut. Could be, it's a setup with some huge PF for patchiness, masking some 100m, low octave, very hard PF's (making the dots), in turn used as mask for slightly colored luminance in 2 default shaders. I had a horizon softness mask first but that's not needed with the moon.