I really, really, really want to be able to sell passengers to slavers.
Especially those passengers who go from happy to exiting your ship (mission failed) as you are passing through the letter box to dock.
This needs to be a thing. Moar crime! Naming your Beluga "Disappearing Act" and abducting people to sell into slavery should be a gameplay avenue. With serious repercussions ofc; that seems like a pretty major crime. Stealing people as a career should at the least leave a trail of KOS stations eventually.
It'd probably be an easier thing to collect pods in your "humanitarian" vessel and sell those folks. Maybe better rates for different pod occupants depending on the buyer? Military personnel, business and political muckamucks, rich tourists lost in space, that kind of thing. There should be a reasonable temptation provided to fall to the dark side.
Not that I run slaves even now, so this isn't even an idea for me; it really fits the Eliteverse though. Maybe you could even power down your cabins and then sell the occupants as Fertilizer, just like the oldendays (or to be exceptionally dark, Animal Meat >__> ).