I'd rather James Cameron. Avatar is a closer visual relative to Nausicaa than Villaneuve's Dune, and his long-standing desire to see Gunnm adapted (which he eventually passed to Robert Rodriguez so it could actually get done) tells me that he has a respect for both the originating medium and a lot of the elements that also make Nausicaa work. The two works have very different tones, of course, but so do Nausicaa and everything V's done.