[That's a good question.Julia was only meant to appear in the first scene of The Magicians, but she kept coming back. She believed the books were as much about her as they were about Quentin, and as it turned out she was right.It's true of Janet and Eliot too -- they were never meant to be point-of-view characters, but they got too interesting. I couldn't keep away from them.I wish I could have spent more time with the swordmasters, Bingle and Aral. And Jane Chatwin, who deserved more screen time, and Eleanor from the Magician King. And I wish I could have worked in more talking animals, especially the Questing Beast. I wish I could have written a proper romance for Eliot, and I'd like to tell the story of Asmodeus hunting Reynard ... you'd think after 1200+ pages there would be nothing more to say, but there are so many threads to follow. (hide spoiler)