One of the largest and best changes in Assassin's Creed Black Flag Resynced is the new combat system. It's still faithful to the original's lethality, but it's no longer just about standing still waiting to counter an attack.
But you know what I don't love? The confusing removal of hidden blade combat and the ability to pick up enemy weapons. It's dual cutlasses all the way, matey, which gets old pretty fast. In fact, it's been a pretty big point of contention for fans of the original game ever since the remake was revealed.