Totally agree. I watched it with my family and my mom was confused at times. I had to stop and explain things like the Mentats and the real power of the Spacing Guild. I don’t think they make clear in the movie just how important this spice thing is. She also thought the Baron was the Emporer for most of the movie. I don’t know why the emperor and Irulan don’t make an appearance.
After the movie was over she said she liked it but she wasn’t sure if she could follow without my help.