I may take you up on that. Still a bit early in my process. I'm writing a procedural planet data generator ( so mass, gravity, atmosphere, biosphere, etc ) and I think it will fit like a glove into this shader system.
For example , I can make the clouds yellow when the atmosphere generator returns Hydrogen Sulfide. I'll be sure to link you to the project when it's more complete.
https://www.screencast.com/t/PyoSNBvDvWf
Here is my first attempt at a planet using your shaders. I'm making a kind of avengers in space game, so I wanted something with a more pen & ink style than pixel art. It looks like the shader scaled. I had to change it pretty dramatically, but I learned alot reverse engineering it.
I added those polar ice caps, modeled on your shaders, but using textures rathe than in shader noise generation.