I ALWAYS, every time, I play with derelict sector custom start and random weight factions.
If you like I would be happy to include my active mod list.
It's.....extensive.
By adding one or two factions you can mitigate your issue.
I recommend Diable Avionics, Kingdom of Terra, Dassault Mikoyin Engineering (not sure I spelled that right), and HMI.
Really though just adding one of the major mod factions is generally enough to change the landscape to the point where things will be ok.
Actually, if you run the game with custom start: derelict empire and faction weight: random you shouldnt have any issue, regardless of adding factions.
If you want a brave new world the likes you've never seen, I'd be happy to provide my active mods.