Let's be real, if they where 100% accurate to the novel after the whole movie we would still be in the first few chapters. Let's not get caught in the minutiae. They made some changes that I realize after reading the first book again where necessary because without the longer explanations only available in books cannot be conveyed on screen, especially when you consider every moment filmed and word spoken costs money. I do hope they do better job conveying Paul's thoughts and mental state as well as portraying the abilities of the bene gesserit. It will be challenging, but considering how well they have portrayed Frank Herbert's novel so far, they should be able to keep the unique and fascinating work rolling in the right direction. With luck, through the whole of the story. I suppose that would be asking alot though lol!