Re: Films - meh
That's the thing, though. The movies acts as a great illustration to the book, but without having read the book it's very confusing. I remember it came on telly a day or two after I finished the book, and suddenly everything slotted into place. And you could see which bits had been shuffled around just to shift the narrative along quickly.
Dune is a truly epic tale, and IMHO much too big to fit in a single movie, or even a mini-series. I would love to see it given a full Game of Thrones level TV series treatment, then you might get something worthy of the books. Not likely to happen, but a man can dream.
I read The Expanse in parallel with watching the TV series, and doing that it was really obvious how much you lose even with many hours of serialisation, although I still found the series pretty enjoyable (there was that aspect of it providing a visualisation of key parts of the story). But trying to squeeze an epic tale like Dune down into a single two hour movie, to my mind it just can't work.