What a terrible game :/
The DLC added absolutely nothing to the story. I thought they might be trying to tie it in with the beginning of 4 by dropping it in the ocean, but that makes no sense since 4 takes place before this one.
I think I'm done with this series, this game and it's DLC ruined it for me. I was so excited for the time period, but I feel so let down. I remember the first time I saw the E3 footage from AC2 and people were cheering, I remember how excited I was for that game and it did not let down. I don't think we will have another point in this series like that again, sadly.