Diehard Joss Whedon fans (or Whedonites, I think is what they call themselves) want it to happen desperately, and even the cast thinks it would be just too cool if they could go back and do a sequel to the movie “Serenity” (the feature-length movie version of the cancelled Firefly TV show), but according to the franchise’s creator, writer, and do-it-all guy Joss Whedon — it ain’t gonna happen. Ever. Well, maybe not ever, but definitely it’s not going to happen anytime soon, because according to Whedon, no one is telling him they WANT the sequel. At least, no one with the money to bankroll it.