I have been wondering what would Star Wars been like if Padme had survived Vader's force choke. Vader stayed on the Dark Side after Padme died because he thought he had nothing left for him. In a book called "Darth Vader and the Lost Command", he is haunted by visions of his dead wife. In ROTJ, he finds his son still loves him and turns to the good side. So if he knew Padme had lived (if she did), then would he have turned to the light side, or train his family to be Sith?