On the other hand, there certainly is a separate book there for Dawkins
If Richard Dawkins wishes to write a second book – the pair can be in volume, of course, as a volume divided into parts – then that’s fine. The result would be:
Part I. God is not a leprechaun.
Part II. You biblical ‘literalists’ are dead wrong.
Written well, that would be a good read. Unfortunately, Dawkins is an awful writer and I, personally, wouldn’t bother. :)