I like them better before the "Queen" concept. See, there's a great power to the collective "knowledge." You usually come up with the correct answer or the most advantageous strategy when you ask a question or pose a mental puzzle to hundreds of recipients, then let the opposing responses factor themselves out. Some book was recently published on this, including many examples and studies... I'd like to read it; is anyone familiar with it?
My point is, having the borg controlled by one individual took away one of their greatest powers: the ability to arrive at a consensus as though they were one huge mind, the "collective." Now their just automatons and wetboxes for neural storage of information. They lost their ability to problem-solve in that unique and powerful way.
Maybe the writers did this, becuase otherwise, too many people in too many races would have good reason to welcome the borg. But I think that would have been interesting: a war with two fronts, where the federation must fight against both the borg and federation members who want union with the borg collective.