You guys would probably find all the ins and outs, though from what I could tell and show from below; Botania's Garden of Glass skybox plays super well with your Nicer Skies. All the stars of the Garden of Glass twinkle; all of em'! Felt magical watching the entire thing. The layering is your nebulas in the back with Botania's skybox in the front.
I couldn't find a way to comment this somewhere else, so apologies on putting it here. I felt I had to bring it up because of how great it looked!

Daytime:

Nighttime:

Might add that to the banner next update cycle

Aw, that does look great! Thanks for the nice comment! :D