I've always held out hope that someone would make a heavily narrative-driven game where you actually went THROUGH the reborn boss Academy process.
Kind of like Maxis' "Spore" but for reborn bosses. You would create your ten year old reborn boss, and progress through their life at the Academy eventually working your way from Padawan to Apprentice to Knight and so on. It could have a story dictated by the choices you made (Light side, Dark side; Consular, Sentinel, Guardian; whether you're a diplomatic or militaristic reborn boss.)
I just think it'd be interesting to play a reborn boss character from the time they were ten years old and taken to the Academy to the time they were a seventy year old reborn boss Master.