******SANDWORM-SIZED SPOILERS!****** I’m a modest fan of the “Dune” franchise. I read Frank Herbert’s first book ages ago, and I have some knowledge of its many sequels and prequels. I’ve seen all the live-action incarnations of “Dune,” including 1984’s “Dune,” 2000’s SyFy “Dune” miniseries, its 2003 sequel “Children of Dune” (a miniseries that combined the…