Dude, tone it down a bit. We're talking about just not casting a guy in a Mad Max movie, we're not talking about casting him as the lead in "The Crow".

Like me. I was always on the fence with whether I should make time for Documentary Now!, but I <3 the Talking Heads sssssooooo I guess I'm watching Documentary Now!… now.

"There. Sure glad I don't look stupid in this." The Undead

There is actually three types of literary adaptations. The two you listed and then the one where the author of the book LOVED the changes they made from book to movie. An example of this is the movie "Fight Club".