Hi, everyone!
I came up with some ideas for US²:
-Coloring Planets(Atmosphere,Water and Rocks)
-Terraforming Planets,Asteroids etc.(like a normal Terrain Edtior in most Game Engines)
-Vegetation on Planets and coloring the Vegetation
-Graphical Options(Lens Flares,God Rays etc.)
Let me know what you think!
Greetings Rico!