Yeah, this is a really good idea. I mean if you kidnap a bunch of VIPs, can't you be sanctioned for selling them anywhere they actually sell for good money?
And if you sell them there, you're not even a slaver. You're just a guy taking them on holiday in a dirty ship.
Plus, you could turn captured pilots in to slaves too, which would also be nice.
Also agree with all of jinx's points. Turning scrap or ore into alloys or hull panels or what have you would be great, and also might get people mining again.
