Ok, I got your attention.
Suppose George died tomorrow. Morbid, I know, but hey, it could happen.
Anyway, suppose he was just gone before Ep III was even completely written much less filmed and completed.
Who do you think he, that being George, would have finish the saga for him? That is, if he put that sort of thing in his Last Will and Testament, who would he want and trust to complete the Star Wars saga?