Hi pigeonaut!
I'm glad you like it :) If you have any ideas for improvements or find any bugs, please let me know.
For Earth like results I'd try to tone most effects down and increase the subdivisions especially during the erosion by setting more values at iterations_per_subdivision.
Please note that every additional value there increases the memory demand approximately by x4.
I think I generated the screenshots here from the default configuration with many erosion iterations.
To create something similar to the Moon I'd focus on the meteor settings. Having many meteors and a huge range between radius_min and radius_max should yield nice results.
If I stumble on new/old settings that yield great results, I'll let you know :)