I'll defend the Lynch Dune upon occasion. I figured out it's (to me) biggest problem the very first time I watched - what favorite sub-plot of your's from the book did it set up and not resolve? Everyone I talked to who had read the book had a favorite sub-plot that the movie set up and then dropped.

In terms of using the title and nothing else, Dune was nowhere near as bad as, say, Starship Troopers.