Solved!
1) Done
2) Already done, but I needed to compress the planet lists for systems I disabled. This isn't super clear in the install guide: it tells you to decompress systems you enable, but not to compress disabled systems. The linked video does go over this though, so ¯\_(ツ)_/¯
Hey, I'm having a problem getting scatterer to work, like, at all. it used to be just limited to issues with the stock system, but now I can't get any planet to use atmospherics.
Here's some examples and my GameData