
For archival purposes, let's start compiling the numerous inconsistencies between the new books and Frank's masterpieces. I'll start it off...
Let's begin with House Atreides:
In Dune we are told that Harmonthep is "supposed to have been
a no longer existent satellite of Delta Pavonis", yet it is mentioned several times in this book.
Piter is addicted to sapho juice in this crappy book, but that is never mentioned in Dune. In Dune he is a big time spice addict; which of course is never mentioned in House Atreides...
How the hell does everyone know that the Tleilaxu are religions fanatics when that isn't exposed until Heretics?
Ahhh, the famous Elacca wood conundrum. Elacca wood is described as "wood from Elacca"in this steamer. According to Dune, elacca wood comes from Ecaz. Pinky and the Brain have some explanation for this somewhere; can't be bothered to search for it now.
Ix is of course a confederacy, not ruled by "House Vernius"
In Dune it is said that it is generally known that Elrood "succumbed to chaumurky", yet in House A they go to great lengths to convince us that Shaddam and Fenrig did this unnoticed.
This one always bothered the shit out of me: "Fixing" a crysknife is explained as "keyed to the body of the owner so it would dissolve upon his death" in this steamer. In Dune "Fixed knives are treated for storage"--IOW exactly the opposite.
An interesting one according to alt.fan.dune: "House Atreides_ makes Reverend Mother Gaius Helen Mohiam out to be Jessica's mother. We know definitely that Frank Herbert did not intend this, as it was the only entry in _The Dune Encyclopedia_ he objected to. (Willis McNelly convinced him to let it be included as a joke.)"
Of course the whole Mohaim rape deal is WAAAAAYYY over the top. Apparently she infects him with a STD that makes him fat, when it clearly states in Frank's books:
He was a fat, monstrous..." "He was a seeker after sensations," Moneo said. "The fat was a side-effect, then perhaps something to experience for itself because it offended people and he enjoyed offending." ~~Leto II in GEoD.
There was yet some rigidity in his fat, but it was obvious to the eye that he'd come one day to the portable suspensors for carrying his excess weight.~~speaking of Rabban in Dune.
"Here's one who won't let himself go to fat"~~speaking of Feyd in Dune.
And of course, Alia starts getting fat when she is possesed by the Baron--so I guess STDs transfer through OM also

Also, in GEoD we are told that Duncan had a sister that was killed by the Harkonnens--where the hell is mention of her in this steamer?
OK, that gets it started. Keep adding to the list or start on another one of the prequels/sequels......