I think this plot idea has a lot of potential and the summary blurb will definitely draw people into wanting to pick this book up. The preview's tone sets up the type of world immediately. You can visualize the illusion that everyone is living in. I'm not a fan of the cover though as it doesn't seem to match what is given about the book. If Belles control what people in this world value, the cover should make them look more powerful, in control.