Haha. It's nice to see this opinion written out. I read a few of the Herbert/Anderson books (I had a lot of time on my hands) and came to similar conclusions. I was most disappointed with the post-Chapter House stuff they did. It was allegedly based on extensive material left behind by Frank Herbert for the seventh book, but it very quickly tied in material and tropes from the prequels that Brian Herbert and Kevin Anderson had written, clearly being their creature and not the father's.
I was somewhat disappointed to learn that Anderson had been a consultant on the new film.