I agree with Pack93z that they need to turn Hawk loose. I think they loaded him up with too many assignments right from the beginning. I'm not sure if that situation will improve in the 3-4, although I do know that I like him blitzing up the middle better than off the edge, so ILB definitely seems like the position for him.
Ray Lewis has said that playing ILB in the 3-4 is not nearly as fun as playing MLB in the 4-3, which makes me leery about how much Hawk will be able to use his instincts in this new defense. I'm hoping that there are at least a certain percentage of plays where they just tell Hawk to go get the QB or ballcarrier.
As for Reggie Bush, he has been a disappointment, but I would not label him a bust. He was pretty great in his rookie year and helped the Saints reach the playoffs. Even last year, he had some great punt returns, including two TD's in one game. There were always questions about whether he would be durable enough for the NFL. The high expectations were based on his big play ability, and he has shown that--just not as consistently as expected.