It does actually work to do this for just three characters, methinks. You just need to find a GM willing and able to run the series. It can possibly be run as a GCDQ type event for those interested, though the group would need to have a very like-mind/matching purpose. I can't jump on another long running series myself (since I've somehow got myself into two of them), but I could run the GCDQ idea. I'm about to finish up the SB GCDQ and Tyra's CDQ. Following that, I'll have Jehoram's CDQ, and unless one of my backburner's steps up and says, "Hey, me next!" then I can run this next. I'd treat it as a CDQ, in the sense that it would focus on challenging and stretching the characters outside of their comfort zones to allow for character defining choices to be made.