Think of a coach as an player? analogies, how do they work? the point is that he is so bad at his job that his mere presence makes the defense worse and there's a chance that almost any qualified replacement might be an improvement. Analogies don't work by comparing apples to oranges. Comparing the impact of a coordinator in football to an end of the bench baseball player is pretty far from a good analogy. What's a new DC going to do midseason? Even with a bye week, he's not going to implement new defensive schemes...he's not going to magically be able to make the linebackers be able to actually be good at pass coverage. As someone said, maybe a new voice gets them a little more interested, but I don't think the defensive issues have much to do with interest...instead they have everything to do with lack of talent. Again, I'm not defending Tucker. He needs to go. I just think the knee jerk "Can his ass now!" reaction to a couple of real, real bad games isn't very valuable.