I've long thought Slaver could be great for a circus master/rinmaster/beastmaster type perk for a fighter so with this new implementation I'd suggest a way this could be implemented for the capture of animals and similar just like companions for the Fighters with the Slaver Perk.
Maybe even Rogues with the Wildling perk while we're at it? No big deal but just tossing that one out. The main focus is: SLAVES Slavery on EFU is one of the most automatic ways to get FD'd by everyone, even necromancers and villains.
Utilizing the new animal companion script though it would be immensely cool to get something scripted for the possession and capture "Breaking" instead of "Training" for Slaves. NPC Monsters, or even Base races, utilizing the same script. More exotic slaves would require higher level to capture, etc.
At the very least I'd say let Slavers have access to the animal companion changes (Slave hunting animals, or pit-fighting animals, etc)
If possible though expanding the new script to slaves I think would be immensely cool.
I do not have any creative addition except to say that this would be totally awesome.