I think the direction on this movie shows just as much creative genius, if not more, than Steven Spielberg's first movie "Jaws".
The tonal values and the color is off the charts.
Knowledge and use of light in this movie is unsurpassed - your ability to reach just past the limits of the Dynamic Range of your camera - on the high end and the low end is beautiful.
The ability to say soooo much with so few words in a script is just past excellent.
Don't know if I would want to watch it if the story line was any more intense than this was.
The pieces of the story fit together seamlessly at the end of the movie.
I think everyone was able to relate to the characters (in a good way or a bad way) in the movie. This is not an easy thing to do with such a small written script.
I believe that one of the most important things in a good movie is a well written (re- written) script - In this case I would say that the director wrote (very well) most of the script with the camera.