It would have been awesome to see a mod (Landsraad - A Dune Total War) that is like an expansion of the original game. A modd where the different houses of the books with their own superweapons and sub-houses are fighting for control of the planet Dune like:
House Ordos (not mentioned in the books)
House Ix (independent house)
To get inspiration, check out this link Steamcommunity.com on Steam where someone has created a Dune submode for the game "Stellaris" where the Great Houses are presented as well as their special features to borrow some ideas.
Now wouldn't this be something!?