I agree with Craig on the Barbossa-Jack thing...and the Prequel idea sounds like a great idea, as it brings back the entire Black Pearl gang.
I also agree that the special effects, and the general 'turn-it-up-to-11' action, took a little away from the 2nd, and moreso the 3rd, installment. ; #1 was in so many respects a perfect film - great effects but not too much, great acting, fun, family friendly, solid action but with a story. ; I still enjoyed all three of the films, but I'd say each one dropped a notch under the one before it. ; I'd love to see 4 get leaner and more focused and get back some of the charm of the first one.