Harry Potter

Yes.

How is it that hard? I'm assuming the producers, directors, script-writers and so on can read. The books are not that long (even Phoenix is not that long in the grand scheme of things).

The only reason to get her involved is to provide "extra" background detail that doesn't appear in the books at which point they have stopped being faithful to the books and are just made up bollocks.

So either you have a series that is faithful to the books, or faithful to her original vision which will be nothing like the books we all know and (I would assume) love, or we get a series that is something like the films which I happen to think were great and -- in places -- a vast improvement on the books.

Absolutely. All it takes is a competent script writer and director. Adapting a book to a movie is harder because you have to cut material for time. A series based on a book, you have plenty of time, so you can pretty much take the dialogue as written, and the rest is about set construction and costuming with whatever effects are needed.

It isn't like it was with game of thrones where the series wasn't finished. Even there, they diverged from the books enough that they didn't really need Martin the last two seasons if they wanted to diverge even more and ignore what he intended as the finale.

I have no idea.

But she wrote all three screen plays, and for me they were just ill conceived as a way to tell the Dumbledore/Grindelwald story. And the last one was particularly bad as a film -- the story, the production..... everything.