We live in the real world, and make our choices based on what’s in front of us, but we can always pray for a miracle.
There have been discussions of doing 'The Demon Cycle' on both large and small screen scale, and while there is no project currently in development, I think the series has both the big imagery and complex character development to have legs either as a TV series or film franchise.
I think each book sort of finds its own theme as it goes on. 'Warded Man' was fear. 'Desert Spear' was exploration of the other. 'Daylight War' was relationships. Some of this is intentional, and some of it evolves naturally. The series as a whole is obviously something I have given a lot of thought to, but each book is its own animal as well.