The only bit I have to chime about it is the HK behavior and that there should be exemptions for certain crafts (Zeppelin im looking at you). That's an Oops that got overlooked when HK got introduced. The Blowfish and Airbus are good examples of crafts that arent a Zeppelin which the factions wouldn't bother targeting. The Blowfish are you kidding me? Thats an expedition thats obviously investigating the deep one threat, its so far below marsec vipers to even bother with.
Its not that they cant be Seen by the HK its that they've got Social Camouflage and the fighter shouldn't be considering them because they're just harmless. However I do think, if you engage an HK that should bunkerbuster through the protection, you pick a fight and they'll finish it.
This could probably have bit switches for different kinds of behavior. Some dudes like raider barques and wasp aircars dont care if you're official, unofficial, pirate, civilian, or whatever. If your craft doesn't check that bit matrix they get chased. The zeppelin has weapons slots so it can potentially shake off a Ninja Bike or Wasp.