Directing is a more pragmatic experience, where you have to deal with the restrictions of time and money that force you to make certain decisions you don't have to make when you're writing.
At one point I intended to write precursor and sequel novels, about the establishment of the Web and its next evolution, but I am very unlikely to now; they would take place in a different universe.
A lot of directors are great and they are fine but you know I think that Harry really takes a special point to really engage the actors and really make it feel like a safe place for them to explore whatever it is they want to explore in whatever scene with their character.