This is absolutely brilliant, especially the part about rewriting. If one goes back and looks at the series at a whole, it's quite clear that the best, and best-written, of the seven books are the first three, where Rowling was still contractually obligated to listen to her editors. Once she had enough power to dictate to them, she could, and did, turn in what reads like unedited first drafts. Very bad, and why in the long run I can't see her books being taken seriously as literature after her death.