I saw Pirates of the Caribbean 4. It's just about what you would expect. It's clearly the work of people who just didn't care. It's one of the many modern movies where you have no idea where you are or what's going on most of the time. They made the shot very pretty, but it's clear they didn't do the work to flesh out the world.
Al Swearingon didn't get as much to do as I would have liked, but he had an entire HBO series, and that didn't satisfy me.
Apparently some idiot in marketing thought the movie didn't skew young enough or something, so they added in a pointless romance between a young couple of "actors" with all of the "acting ability" (generic good looks) and none of the name recognition of Orlando Bloom and Keira Knightly. I thought cutting the boring romantic pairing was the best improvement to the series, only to see my hopes dashed. At least it didn't take up much screen time.
Speaking of, I hate that Hollywood seems to think "romance" is the same as, "the woman is attractive, and the man is attractive/funny", so they fall into each other arms, often having spoken for less than ten minutes. I'm not saying you have to show ten minutes of dialogue, although Tarantino shows it's possible. A movie can indicate that a romantic pair has had time to talk off-screen before they decide they'd die for each other. Pirates 4 was particularly bad, considering one of the pair was a monster, and the other was a priest.