I agree with the idea, but I remember the devs leaving it alone because it wasn't worth the extra work. I do like the idea because it would make certain systems harder for unlawfuls to pass through so casually. But I have to think that the amount of time that needs to be spent rebalancing all the NPC house systems npc ships and spawns would be a lot of work for any team of devs.
Also I have a feeling that some players would start to whine or cry about all the NPCs with sharp shooting SNACs and the swarms of VHFs showing up whenever they enter some systems. Although it is as it should be if Disco were real, I dont think its going to happen so soon. It is on my wish list though