Creating interaction requires these two things: money makers and places to be a money taker. All else is dressing on the salad of life.
Vanilla FL had the noob run, and the bottleneck of s13. other incarnations of disco have had different activity hubs (sadly killed off in favour of dispersed activity), and the tech-toys we've received recently have promulgated this (cloaks and JDrives).
Activity hub suggestions:
Bring back regular mining (discussed elsewhere)
remove tractor beams from npcs (solo miners group together n create activity organically. pre-grouped mining takes organisation)
random commodity hikes (changing once a week through DSace)
treasure hunts (spawn a wreck somewhere with a 100m credit card/equipt on it)
bring back barges
reduce the number of restarts. (time was, you had to spend a while prepping a character - this created activity. now we can have our cake and eat it too).
Bottle neck suggestions:
Superjumpgates (parked way off the plane, with no npc spawns, that lead from bret - kusari, and rhein kusari)
delete empty systems like chester
delete guard systems and insert the assets into the home system, but with increased npc patrols in that area