Major caveat to my review; at this time I am not familiar with the graphic novels which created the characters and situations. Now to the movie: I loved the first ten minutes which were an intro. Fabulous video imagery!
But the story needed to be better explicated throughout. The transfer of the story from page to screen was deficient and the deficiency was in the framing of the story and the writing in support of everything.
As to casting. I loved seeing Rutger Hauer, The main characters however, were not very engaging. They went through the motions but carried little emotion. I was reminded of a similar failing from book to screen in the Dune story. Though visually stunning for its time, the main cast of characters did not carry the story and did not seem emotionally suited to their roles.
The above being said, I found the movie watchable from the great visual variety presented, it was as though the cantina scene from the original Star Wars was magnified to the nth degree. Kudos. And the movie as a whole was far more imaginative and interesting than the banalities of the latest version of Mission Impossible.