How about a spin-off RPG. Set on one specific station or in one specific system. Using rival factions and or enemy infiltrators, criminal gangs. Could use the shelved FD FPS as a basis.
Are you suggesting some sort of addon? or a completely new spinoff of the game? - I was a huge fan of Earth and Beyond - so any space sim RPG I would love to see
RPG element's in Game, make Open play more Dangerous, and Solo play ultra easy.
Example: Bonus critical, bonus on base damage, shield, speed, recovery all types, resistances and etc.
There is plenty of that and this.