keep the OSC ID as the same, and buff the slaver id to make it more interesting.
1. if the osc id gets buffed, it could turn into osc id'd players hanging around the hawaii/shetland causing a nuisance of themselves in what is relatively dangerous space, as opposed to osc id'd players yanking slaver id's in house space
2. the problem here is not the osc id, it is the slaver id. no-one flies with one. why not?
a. you is slaver pewpewpew
b. slave route got nerfed - why do a run when there is no profit in it?
c. the pilgrim is a HORRIBLE ship. it's turning circle is slower than the strafe of a fighter, so a fighter can sit on its starboard bow, and pew and pew and pew and pew, and the guns cannot aim at it. 12 turrets might fire backwards, but there is nothing to scrape the klingons off the starboard bow.
suggestions:
relax the cargo restrictions on slaver id,
drop the sell price of slaves to make the run more interesting. InRP, slaves are cheap.
create a new slave category of 'Concubine', that sells for higher prices, but takes up more cargo room, like VIPS. Imagine bribing an officer with a 'massage-with-a-happy-ending' instead of cold hard cash....