The fetish for the director as the supposed main creator causes some of these problems. Scott, as we know from his notorious non-comprehension of Blade Runner, is not the sharpest tool in the box. So if he takes too many liberties, the thinking gets screwed up. Another part of the problem is the idea that because movies are visual media (forgetting they are audiovisual,) and one picture is a thousand words, that means the creation of pictures (as in storyboards) is the key to creating a movie. Unfortunately, by a perversion of math, a thousand words is worth more than a million pictures when it comes to communicating ideas.