I realise it's early days - this bit of NPC flavour is less than a week old. But, having experienced it in a variety of different situations so far, I can say:
Spawning of the NPC pirates at Clusters and Rings needs a lot of work.
Currently, you can travel 100 LY, lugging mining and scanning equipment to the middle of nowhere. If you see a ringed Gas Giant with pristine metallic/metal-rich reserves, you can stop there to mine away.
You haven't seen another ship for an hour, and you drop into a randomly selected place in the rings.
And then, in that distant system, random planet, arbitrary ring location, RIGHT THERE is a pop-up NPC saying, "WHAT TREATS DO YOU CARRY?".
lol
So he was lurking there, like Dynamo The Magician, waiting to jump up and amaze you. How did he KNOW I was coming to this rock? Incredible!
Sometimes, three other NPCs arrive, and they start fighting. Just LEAVE ME ALONE, MAN! Go fight somewhere else, haha.
It needs work. Context is important.
- If you exited SC in rings or cluster of a distant, empty system, it's not expected that an NPC can then "find" you.
- If you exited SC in a not-so-empty system, the speed at which an NPC pops up needs to be chosen carefully. I get your wake can be "seen" by someone after you're gone, so it's *possible* for someone to track you down. But not in 5 seconds.
- If you exited SC at a marked location in a busy system, sure... NPCs could be there already.
It needs some TLC in order to remain believable.