It would have been really cool but it would have had to have been done right. With a big surprise scene where he appears from behind a closed door and takes Obi-Wan or Anakin by surprise. Damn you Lucas for killing this awesome villain to soon!
Kick Ass concept! although Episode III would have been a better come back, get rid of General Grievious and had a real bad ass Villian, but have Episode II ending with a final shot of Lord Maul overlooking his Droid army But George never asked for my opinion