I cringe when movies are made of the sci-fi classics. Unless they are done well, they turn out like Verhoeven's rape of Heinlein's classic Starship Troopers. (If I ever catch that prick in a dark alley.) He took a great source, excellent cast and made a joke out of it. What did he come up with? Doogie Himmler.
If a studio and a producer does one of these classics, they must respect the source. Verhoeven DID NOT even read the book and it showed.
Dune has been done twice already: first by Lynch in 1984 and again in 2000 as a Sci-fi channel miniseries (before they went completely to crap).
Neither were perfect but, the Lynch adaptation has become a cult classic despite its wanderings from the novel.
I hope the new one is good. Heck, I want it to be great. Good sci-fi that makes money encourages studios making crap to take a chance and try to do better.
So far, I like what I see. I want them to focus on the story. It's good enough. Don't make the mistake Disney made with the Star Wars franchise and Witch Kennedy made and try to make it a vehicle for something else. That failed miserably and ruined what was a multi-billion dollar franchise.