What Could Have Been: He wrote a bunch of Shermer stories, and even continued writing them after he left the Hollywood scene. It goes without saying that his fans would REALLY like to take a peek at his notes.
Even while he was active, he had a bunch of ideas that never came to fruition.
John Hughes: I may be writing about young marriage. Or babies. Or Breakfast Club II or a woman's story. I have a million ideas and can't decide what's next. I guess I'll just have to dive into something. Maybe a play.