I loved the ship combat in Assassin's Creed 4 and this looks far more indepth than that, visual style looks great, the design of the pirate captains is cool, pirates are always cool, it sounds like the structure of the game might have similarities to Sid Meier's Pirates which I played a lot of as a kid so that's cool, and well, the game looks cool overall!
Don't think I have anything more meaningful to say, but I'm really excited about the game and I'm really curious to see more.