There's a sense you get from the Coens' work, like 'No Country for Old Men,' where you put these characters in situations, and you just let this painful amount of time take place. Part of the tension is just how long it takes to get out of that scene.
I think a writer's first job is to entertain, even in novels: to tell a compelling story that pulls the reader along toward an end. At the same time, the best stories are character-driven.
I love the idea that the editing room is the final time you write. You should still be creatively solving problems even at that point. It's not really until you're locked that you can call it quits.