I'm looking forward to new everything! I loved AC1 and AC2 but felt ACBH was abit confined in that it was only one city, and then by Revelations it was all getting abit stale and repetative in my opinion. From what I can see of this though is they're taking everyones favourite bits and revamping the series which i think is great! Also Connor is also by far the coolest character yet!
Besides looking forward to everything in the game, I'm looking most forward to murdering thousands of potential threats in this game, since there will be thousands of npc's in this game, instead of a couple hundred like in the past AC games. I've always liked the thrill of killing people in AC games, but it never felt like there was enough to kill, until now.