The writers job is to get naked, To hide nothing. To look away from nothing. To look at it. To not blink. To be not embarrassed or shamed of it. Strip it down and lets get down to where the blood is, the bone is. Instead of hiding it with clothes and all kinds of other stuff, luxury!
For me, it's always filmmaker and then character and then story. They're all equally important but if you don't have a great filmmaker, you will not have a great film unless you just get lucky.