I liked the trailer. And the actual footage looks so much better than Lynch's movie. Also, I think you underestimate how many people have read this book, it's a sci-fi classic.
That's not my hang-up. My problem is using the Floyd song in the trailer. It clashes 100% with the flow of the story of Dune. Maybe I am being stubborn, but that song should never be integrated into sci-fi, because Floyd was never about sci-fi. The Dark Side of the Moon album was so beyond anything sci-fi. It is it's own genre of mental exploration.