I admit, I have to get it out of my system. As much as I like the game, it's a lot worse than the first one. It's not a bad game by any means, but it could've been much better. Everything, from the plot structure to gameplay elements, is flawed in a major way.
The story. It is not a part of the overarching plot - the Reapers as a threat to the galaxy. Instead we get a new villain, who was not even mentioned in the previous installment. It's established and finished with in this one...