CP3S said:

This can be true, I suppose. But a bad director could turn a great script into a disaster, and a great director could technically take a lousy script and turn it into something enjoyable to watch. There are movies with awful writing that are still visually and stylistically engaging to the point of being a decent films. I feel the director is still the maker or the breaker.

I kinda disagree with this. If the screenplay/idea is great and the director is bad the film will probably turn out good. If the screenplay is bad then there is no director who can make a good film out of it.

I mean the thing is that there are so many people in involved in the production. If a great script is given to a good art department they will come up with something stimulating. If actors are given a great screenplay they don't really need much direction to make the scenes work.

While on the other hand writer/s is/are alone and have the most crucial task from creative point of view.