One thing I know about Assassin's Creed is that they try something new in each game that's a small change but it's innovative like Privateer Missions in AC III and then if it works out they make it almost a core mechanic of their next game. Things like making bombs, double assassinations, fast travel, exploring outside of the Animus. These were all small at first and then became major parts that we can't go playing the game without so I'm eager to see what they have in store for us and what new aspect we'll be exploring in the new AC