The idea of Anakin or Palpatine seducing some of the Jedi, to turn on one another. How cool would it be for there to be a mass betrayl of, padawans turing on their masters; ala Exar Kun. There are already plenty on indications that Vader was assisted by other fallen in the Jedi purges. "Black knights" help Vader slay the Jedi holdouts in the Hapes Cluster, numerous hands, darksiders, and grand inquisitors, etc.
Actually when you think about it, the Galaxies chock full of evil force users. Should we even be calling it a purge?
