I grew up on the SyFy miniseries and was not a fan of the 1984 film which I felt was more of David Lynch film based on the bullet points of the books. The miniseries goes into great detail of the politics between the royal houses, which is my problem with the new film. The Harkonnen, the antagonists, have little screen time and Feyd is not introduced. They are described as an empire of evil, but not shown why. The Corrino family is again not introduced, but just that there is an Emperor who ordered the Atreides to take control of Arakis. Even Princess Irulan who Paul will have a platonic-political marriage is not introduced. The Spacing Guild, the critical reason why the spice must flow - again not shown nor is it mentioned that without Melange (spice) there is no guild, no space travel, and that the entire empire would collapse. So although it was a good introduction to Arakis and it looked marvelous, there was a lot of substance that was omitted.
Review of Dune
