Peace.
May the god reward you for all your efforts.
I've already read it twice, except for the last chapter which wasn't uploaded yet. I like it very much. Each and every chapter surprised me, although I'm fairly familiar with your work. Just flat-out amazing!
Me personally I like the structure of the book and the order of chapters, but I don't know if that is the best way to go. I like the first two chapters and it's very easy to agree with them, even for sectarians; they do explain the "what" and "why" sufficiently. But the following chapters will be too much of a shock for most people I believe, that they won't even finish reading the book. Even though it's hard to disagree with, anything actually. So I think you took a "risk" with putting the last chapter last and not as one of the first chapters.
I already gave a copy of the first 6 chapters to an Iraqi woman and she was excited about the first two chapters and she told me the author is absolutely right. When I saw her the next day she read the third chapter, and let's say she wasn't that excited anymore. And I get the impression that, if it wasn't for me, she'd never finish reading the book.
The format is perfect for me. So I guess for someone who already rejects the ahadith this won't be an issue. I see you sort of combined "How did it come to this Part II" and "Know Thy Enemy" in the last chapter. I just skimmed through it, and now I'm actually going to read it.
جزاك اللهُ خيراً
Abdelilah