It is probably impossible to create a good Dune movie, as the book(s) are really complex in many ways. With that said, the first movie captured the essence of Dune as well as you could and kept true to the plot for the most part.
This second movie, however, kills some characters and dynamics. Why is Stilgar only a comedic relief? Why did they decide to leave Alia, one of the most important characters in the books, out of the movie? Why is the relationship between Chani and Paul so shallow? They even left out that they had a son that died. The ending scene is underwhelming and is not in line with Paul from the books.
If you're willing to ignore these issues, or you have never read the books at all, this is still a GREAT movie, but the authentic Dune experience still remains Frank Herbert's book.
This second movie, however, kills some characters and dynamics. Why is Stilgar only a comedic relief? Why did they decide to leave Alia, one of the most important characters in the books, out of the movie? Why is the relationship between Chani and Paul so shallow? They even left out that they had a son that died. The ending scene is underwhelming and is not in line with Paul from the books.
If you're willing to ignore these issues, or you have never read the books at all, this is still a GREAT movie, but the authentic Dune experience still remains Frank Herbert's book.