Another though I had on the Prequels...

Yoda says in RotJ "do not underestimate the powers of the Emperor or suffer your father's fate you will".

Always seemed to me that Anakin confronted the Emperor, and then got turned. I wonder if it would be possible to have Anakin confronting the Emperor and getting his ass kicked... Then cutting to Anakin in the Vader suit, and the Emperor suggesting that the Jedi are turning Padme against him. Then have the Obi-Wan vs Vader fight (with Anakin now in the Vader costume, but not fully maimed).

I know that's probably an impossible pipe dream...