The answers to this question are this: We haven't had a sequel with a legit Jack love interest fraught with delicious sexual tension. We haven't had a sequel with a simple yet interesting story-line. We haven't had a sequel script that was fresh and didn't try to piggy-back on jokes that had already been warn down. We haven't had a sequel that completely focuses and centers around the glue that holds this entire franchise together: CAPTAIN JACK SPARROW. Of course, that is until now. This Pirates movie does all the things that made us love the first one, and more. Is it better than the original, perhaps not. But is it just as refreshing and fun? Absolutely. It may be that my expectations were so low that it surprised me, but I enjoyed the crap out of this one.
I think it was absolutely necessary to make Jack the star once again in his own story. For too long, the movies have centered around other things that were weaker than the aura that is Sparrow. Not to mention convoluted. Trimming the fat of the franchise is what made this movie good. Not saying Orlando and Keira polluted the series, but without all the extra stuff, this movie was able to easily capture the audience without anyone saying... wait... but...? and I forgot about... wasn't he with...? OMG WHATEVER JUST FORGET IT.
Overall, this is a great addition to the series, in my opinion. It brought us back to what made the first movie so much fun. It was able to revive in me, a skeptic, the desire to see more of this series and even hope for it. I highly suggest this for anyone who loved the original and wished the rest of the series was more like it. Here is your wish coming true.