Tannenbaum Was OK When Mangini Was Running the Show
When Mangini had a lot of input in the personnel and player acquisition aspect of the organization, Tannenbaum was not an issue. By this time, everyone must know that Tannenbaum really is essentially a bean counter who has an alarmingly low understanding of the competitive football aspect of the game. But when someone as intelligent and knowledgeable as Mangini had a heavy input in the draft, player signings, and overall roster management of the team, the organization was doing well as far as player personnel issues were concerned, and seemed to be going in a constructive direction. But ever since Tannenbaum was paired up with Rex Ryan, the player personnel management... has slowly (but surely) been going in the wrong direction (to put it mildly). It hasn't just been treating draft picks in a laissez faire manner, it has also been an issue of bringing in players with character issues (and even a few who are terribly disruptive in the locker room and "cancers").
If they replaced Tannenbaum with someone else, would Rex Ryan still have heavy input in the personnel decisions? If Tannenbaum could be a non-issue with Mangini, then some (or a lot) of the accountability for the personnel issues has to fall with Rex Ryan. So the answer might be bringing in a head coach who could also bring in the right kind of players as well as being a good head coach. Rex Ryan has proven that he can run his father's defensive scheme well. But there must have been some reason why he and Pettine were canned in Baltimore.