AC2 seems like it will finally fix AC1's problems i.e. the repetitive nature. Also, AC2 has just as interesting a setting as the first.
On another note, I actually saw what the first five minutes of AC2 will be:
*SPOILERS*
It has been one hour since the Templars and scientists left you in the room, and you have made up your mind: time to escape. You escape the room and the building. (How Ezio and the Animus fit into this I will not tell)
YAY!! THE BEGINNING IS SOOOOOO MUCH BETTER THAN THE FIRST GAME'S ENDING!!!!!!!!!!!!!