Pros:. Revamped the scouting department, best drafting in a decade, found what looks like a solid QB without blowing a top draft pick, some good, some bad with FAs. Overall I don't think even the most ardent Bill detractor can say he didn't do a decent job revamping the organization and roster.
Cons: 2004 - all of it, just a wasted season. Waited too long to implement the 3-4. Kept Zimmer even after switching to the 3-4. Missed on the Steven Jackson/Julius idea. Failure to develop a consistent O-line or develop pressure on the QB. This year depended way too much on very young players playing mistake-free football and they lost their confidence down the stretch.
If he were any other coach I'd say over all, given the pile of crap he was handed in 2003 both on and off the field i'd give him a 7. With the expectations that came along with a HOF resume though I'd drop that to a 5. He did better a better job than a lot of other coaches could have done here, but he wasn't brought here just to be above average, and ultimately that's about what he was.
Still would have liked him to give it one more shot.