Why Not Bring Revan, Bane Or Any Other Ancient Sith in The Films?
Darth Revan is considered to be one of the most powerful Jedi and Sith in SW mythos in the EU in comics, games and novelization (Revan). In the animated series "The Clone Wars", he and Bane were nearly written in, but are seen in the deleted scenes. Bane as well.
Now we are all familiar with Vader, Palpatine, Maul, etc etc. Why not bring in someone like Revan, Bane or Exar Kun?