Thank you joefavs for your thoughts. Here’s the thing though, if you look at early drafts of A New Hope [Ver. 3 @ http://starwarz.com/starkiller/the-development-of-star-wars-a-new-hope/] you find that initially, the drug ‘spice’ was very much a central theme of Star Wars. For instance, in this early version, Princess Leia was not fleeing the Empire with the secret plans for the Death Star but rather, holding a cargo of the drug spice. And the two ‘bickering bureaucrats’ (C-3PO & R2 D2) crash land on a planet and find more spice. This version dates back to 1973, coincidentally the same year Jodorowsky’s producer acquired the rights to Dune.
Regarding the movie Dune by Jorodowsky, it in a way does exist, although in another form, that is, two dimensionally on paper. As the documentary explains, the story board contained over three thousand panels painstakingly written by Jodorowsky and drawn by the great artist Moebius. Everything is there including POV shots, long shots, close ups etc. The sword fighting scenes, as an example, mirror certain fight scenes in Star Wars, etc.