Kevin: I must disagree with you on this one: most of the post-58 projects originated with Welles:
2. Immortal Story (Dinesen- one of his his favourite authors)
3. Merchant of Venice
4. Heroine (Dinesen)
5. Don Quixote (work continuing until 1970)
6. The Deep
7. Moby Dick
8. F for Fake
9. The Other Side of the Wind
10. Filming Othello (he was asked to do this, but he enjoyed it, and then decided to do another)
11. Filming The Trial
12. The Magic Show
13. The Orson Welles (talk) Show
14. The Dreamers (Dinesen)
In fact, as far as I know, everything but The Trial, the tv program "In the Land of Don Quixote" (which I believe was commisioned), and "Filming Othello" (which was also commisioned) was a project orginating with Welles. And "Filming Othello" was a project which he was in sympathy with, and liked so much that he planned a series of "Filming..." films. Also, "Orson's Bag" may have been commisioned, but certainly he would have suggested the Merchant of Venice portion, which was the biggest part of the program. Certainly this list is different from projects such as Touch of Evil and The Trial which he never would have done on his own.
My general point is that Welles established final edit after 1958 and the mutilation of Touch of Evil, and never gave it up again, even if the project originated with others, such as The Trial. But of course this meant necessarily working outside Hollywood, where executives and accountants don't trust the artist to deliver a commercial picture, and so have the option of editing the picture to their satisfaction. Even as recently as King Kong, Peter Jackson was ordered to replace the music of the original composer (Howard Shore, who did all the music for the Rings) with something less dark, which reminds one that George Schaeffer said the same thing about Bernard Herrmann's music for the Amberson's 64 years ago, and had some of it replaced.