Alright. I got a couple ideas I think I can try, you're going to tell me which one to focus on though:
Focus on one of my Predator stories
Jaune is executed and sent to the Soul Society, being sent after a rouge hollow/reaper and runs into his old team and RWBY If I do this, it will take longer since I will need to get the idea around Soul Society
Continue with Kitsune jaune or focus on another Monster Jaune (yes, Jaune the Dragon counts, don't worry your pretty little heads off)
Jaune get's robotic limbs as a child after trying to protect Penny from Grimm
I am getting an idea from "almost stupid", wait for this one
Make Jaune a Forerunner
These are my choices for now. I'll update again later after I get something from "almost stupid".