The book and movie shall not be the same, . You can spend unlimited time reading a book but a movie only lasts 2 hours or so. It'd be OK to include ALL the book characters in the movie if the audience have read the books themselves and hence are familiar with those characters, but I guess most people don't have sugar daddies like yours, so they have their own stuffs to deal with in their daily lives and won't have that much time to waste on comics. I mean even if they do read some books they'll choose those which are knowledge instead of garbage, tbh.