1. I haven't read any books talking about Christianity without god. But I have been thinking about it for years.
2. Moral has nothing to do with god. Admit god is a tool to create a fantasy world to lie about the origin of everything, about after life, to drive believers' thinking in the desired direction towards desired result - to control believers behavior, decision, reasoning, etc.
3. God creators and users do have a good reason to hate theory of evolution and all branches of science that study life. But they can't stop its advance. The more people are educated, the less likely they believe those god fantasies.
4. Since god has nothing to do with moral, it's possible to truly help people understand Christian morals with reasoning based on evidence, not god. By doing so, Christianity could shake off all of the pressures it is under now.