Especially when they seemed to completely misunderstand who Daniel and Marty were. How could that have been from Frank's notes? Did Frank somehow not understand Chapterhouse?
I'll admit that I always found the Tleilaxu to be disturbing and creepy and not completely human. But FFS, they were NOT cartoon robots. Marty and Daniel turning out to be those cartoon characters from the Butlerian Jihad books makes me think that KJA thought his target audience was about 10 years old, rather than actual teenagers and adults (Arrakeen forum was actually founded by a 13-year-old who had to drop out of running it and passed it along to me; by that time I'd been promoted from member to mod to admin - he'd mentioned his parents being upset about his schooling so I guess it was a case of they felt he was spending too much time online).
The Tleilaxu religious angle is something I struggled with in Heretics and Chapterhouse. It's possible to despise characters while still wanting to understand them. I've wondered if it's complicated to other people or if it's just an issue for me, as I'm atheist and religion is something I can't relate to.
The notes are all PR. Everytime they announced a new book they'd say they found new notes in an attic/garage/safe deposit box, meanwhile the only independently confirmed documents to exist are for the Butlerian Jihad novel FH had been making with McNelly when FH got sick and THP refused to use them because then they'd have to pay McNelly and BH & KJA created their own completely different story, while still claiming they were based on notes from FH.
I'm sure there were some notes scattered around, but not the quantity and type they kept claiming.
Every author keeps
some notes, even fanfic authors. I've got looseleaf binders' worth of notes on my various writing projects (I've been working on some of them for years and they've grown to the point where I
need notes to remind myself of how everything fits together and where I want it to go - though the characters sometimes have their own ideas where they want it to go).
So of course FH would have had notes to remind himself of who his characters were, how they interrelated, how the Imperium, Bene Gesserit, and Fremen societies worked, and so on, including where he wanted to take the last book that we know of as Dune 7 (since we don't know what FH intended to call it).
Going by the account of the Butlerian Jihad in the Dune Encyclopedia, the novel that had been planned would have been one I'd really have enjoyed. As I kept trying to explain to the prequel fans over on the dunenovels.com forum, the Jihad was not Humans vs. Robot. It was Humans Who Are Pro-Robot/AI And Consider Them Good And Beneficial vs. Humans Who Are Anti-Robot/AI And Consider Them Evil And Harmful. In short, it was a war of humans who believed and supported opposing ideologies. It wasn't ever meant to be a cheap Terminator ripoff.
And holy crap, the stories about The Holy Notes That Frank Left (my own snarky label for them) just keep changing according to what spin KJA wants to put on them, depending on if he's bragging or wants to brush off anyone asking uncomfortable questions.
At one time they were a treasure trove of boxes and disks full of notes. But when people started asking why they didn't publish the notes, suddenly they were "just a few floppies, not much there, not that interesting, who would even care about them?".
Literary scholars who specialize in science fiction, obviously. But of course KJA will find any excuse to never let anyone like that get their hands on the notes - because they'll see immediately that the story that Hunters/Sandworms followed THNTFL is nothing but a lie.