Venus could do something with Khanna, spice!
Or if either one of your criminals want to outsource, Kira could take an assassination mission or two!
Also, if you're still looking for someone to join Killian's open thread, Faelen and Erik could both work. Erik would be more of an example of a knight, while Faelen would be a harsh reality check to the cruelty of war. They could also work with any of your other Connlaothian/Civil War involved characters.
Miko could possibly do something with Tah-leen. While Tah-leen wishes to become a human, Miko rushed into it when she would have been able to do it naturally when she got older, and is now stuck as a fox spirit in a human body with no way to change back if she wanted to, at least not yet.
Finally, Valeska could work with either of my assassin characters, or perhaps Andariel jumps in and tries to corrupt her, promising her the revenge she seeks?
Sooooo yeahhhhhh I had a few ideas xD Let me know if any appeal to you!