Overall I think they had some great ideas for a pirate game but what is ruining the game for me is two things;
First, once again they use the same stupid 'dream sequence' crap which constantly interrupts the gameplay and absolutely destroys any immersion. If this had been a sandbox/open world design would have been a thousand times better.
Second, the save system is massively flawed imo. I spent over a half hour sailing around exploring, fighting, etc but because I didnt go to some plot point or town the game never saved (and doesnt allow me to) so when I died I lost all the progress I had made.
Its just too bad because other than those two things this would have been near perfect. Still a good game but I wont buy any more in the series since they are obviously never going to change those aspects of play.