There's a new* contact in Steel Canyon by the name of Graham Easton, whom you help reclaiming a dubiously acquired relic from the Tsoo. I could see him showing up again as either an accomplice to, or member - former or active - of, the Warriors. Could even be tied to whichever badge you get from dealing with the boss in his arc. Killed the boss? Graham could ask for your help against the Tsoo again. Spared the boss? The Tsoo might approach you to deal with the Warriors.