Revan should be depicted as an Anakin-style character. Powerful, but not skilled enough to use that power yet. (when he lost to Dooku.)
Chop his arm off, cause the revenge will be 10x better when you whoop the guy.
Because, if Revan is facing the TRUE Sith, going into the unknown, they ought to be a lot more powerful than he is. (and that'd be a great excuse to start you off at lvl 1.)