I pray to god it doesn't happen. Whether you loved or hated it, you debated it for years after. That to me is the power of art. If you then make a movie, you are going to destroy that experience for every future viewer. The ending will be debated by your childrens children when they come to age. Tell them the answer by making a film and that debate is lost forever. I think James is a smart man. I don't think he will dilute a strong ending by making a film. Forgettaboutit.