You think way too much :) I am too simple, I guess. I just take the book for what it is (in my opinion), a good story. Sometimes I think my reading abilities are way too immature for me. I can see what you mean by everything you say, and yet I would never pick that out on my own. This is why I hate teaching language arts.
Book 5 gets much darker :) Book 4 was my favorite. I can't wait for the movie. I need to reread book 6 because I was so anxious to get to the end, I didn't stop to enjoy the details.