I missed Rome. The last game while good didn't compare to the previous games imo.
With that said, by far the funnest parts of the game for me were the naval battles. Never has a game made a realistic approach to shit like that.
So I'm a bit torn. This game sounds interesting if centered around naval warfare but at that point it should be a totally different game, as it doesn't feel like "Assassins Creed" anymore if you're going to be a pirate.