I recommend everyone interested in Dune to take a look at Jodorowsky's Dune [0], the documentary which explains how they did the preproduction of Dune, and pitched it to the studios. All the deals eventually fell through, but the pitch decks circulated all the studios for years afterwards, and inspired countless other movie makers.
The best things about the new Dune installments imo is the art, but all, or most of it feels like copy pasted ideas from what came before them. CGI is a huge asset to actually get it working though.