Since I started with the Black Box of LLBs 1,2,and 3, I wore out sets of dice rolling 4 sectors before I discovered Sup 3, the Spinward Marches. Every subsector had planets with much more detail that was never seen in a game. It added color for the descriptions when the players discovered that they dropped into a religious war between 4 different religious groups with second and third planets under their control. If you didn't worship their god or profit, you were a heretic and they had a burning pole just for you. The Imperium was another discovery. Somebody was in charge of this mess???
I stole ideas from so many books and authors then mixed them up kept the players guessing. Throw in NPCs like Slippery Jim Degris, Retief of the CDT, Rico of the mobile infantry in TL15 battledress. The Kzinti looked Aslan looked and behaved like Aslan. The Vargr behaved as wolf packs. A robot empire was next to a Soviet empire of telepaths. As I was hitting college age, one of the empires was near human, but had a 20 female to male ratio. It was the Amazon Sorority. Males were kept under lock and key. Male visitors were hunted where ever they landed as fresh genetic material. You want to see a group of college guys freak out? drop them in a forest with a few hundred women hunting them with tasers, shackles, tiger pits, net traps and desperate feminine hormones. This was in the early 80s before internet ⌧ was discovered.