Added to the 'ambition, subtlety and character development' is that this is Part One. I read in reviews that before the story really gets going the end credits suddenly starts rolling across the silver screen, after 150 mins. Sounds like Ambitious with a Capital, but will leave you with an unsatisfied, hungry feeling. Which could be a problem if disappointing box office figures bars the making of Part Two.
Still, Part One seems to be jaw dropping and I want to see it! Even if there never comes a Part Two. We've been waiting far too long for a seriously good adaptation of Dune. According to most of the critics this is ambitiously good.
(And I don care what Marvel fans think of it)