Well I'm pleased I'm far from the only one who prefers the OT FX, dated as they may be.
What good is realistic lightning in the PT, or any of the "realistic" CG, when it's dramatically impotent? I don't care how apparently photo-realistic it is, it just does not register in the same way. That extended opening shot in Revenge of the Sith, yes, is technically brilliant. It's also boring. I'd take the opening sequence of Star Wars over that any day.