Rings with procedurally generated fragments in them!!
Soooooooooo many games have planets with rings, but they're just bland 2d textures, KSP included! Only one game I know has ring fragments in them, and that's Elite Dangerous. If you can manage to make planets with rings have fragments in them, HOLY HELL. It would add a whole new level to exploring Saturn and other gas giants. YEEEEEEE!!!