Here's my take on KC's change in defensive philosophy.
When Herm was here, KC ran the Tampa-2/Cover-2 defense. I'm not sure how everybody else felt but after the 2007 season, I thought our defense was going to have a breakout year. We had worked out some of the kinks and everybody knew their role. I figured that the Jared Allen trade would not be such a huge loss. Clearly I was wrong on that. KC only had 10 sacks last year! The coaches put players out of position (Tamba on the left side was a disaster, even though he wasn't turning any heads on the right side either). Linebackers kept getting injured. And we just flat out sucked!
Now Herm is gone and we're going to run the 3-4 defense. I'm giddy about the pieces coming together but I felt the same way last May. Look how well that turned out.
I understand the need for change and I really like the switch. But I think if we would have stuck with the Cover-2 defense, I would have been fine with that. When it is run correctly (ex. not having Gunther calling the shots), it is the most effective defense in the league. The Bucs have run the Cover-2 for years and they were excellent at it. Minnesota, Chicago and Indy run the Cover-2 defense well (when the players are healthy). But now it is being phased out. The 3-4 defense is becoming popular again. And now I'm going to maintain my blind optimism in the new defense.
Give me some feedback!