Personally, with the defense's improvement this season was a clear indication of the coaching staff's ability. However, with that said, I do agree with the pass rush being a huge concern. In fact, I think it points at a larger issue for the team: its identity. With Moss and the 2007 team, it was all about offense, which ultimately failed us. This year, it was about offense, which, you guessed it, ultimately failed us. So, no matter who you put on the field, this team--with Tom Brady--seems to be identifying itself as offense first. When we won the 3 Super Bowls, we were defensive teams first. Now look at who we have for our best players: Brady, Welker, Wilfork, Mayo, McCourty. 3 of the 5 best on our team are defensive.
Let's play to that strength in this year's draft. Get a pass rusher linebacker, a solid defensive end, someone to spell Wilfork at NT and double as a DT in 4-3 sets, and another safety. For the offense, draft a backup runner and a guard to replace Mankins. While Mankins was key, his asking price will be huge. Also don't give a payday to anyone else on the offense besides Brady. With the additional cash, pursue Nnamdi Asomugha who will allow BB to create more elaborate schemes.
Overall, we don't have the talent on offense to get the job done right now alone. And to go out and get the talent via draft and FA will be difficult. On the other hand, Pittsburgh, Baltimore, and the Jets (the defensive powerhouses) are getting older and we have a core group that is already fantastic to go forward with into the future with proper support. Why not make the splash for Asomugha and a crop of rookies on the defensive side and make a push for the championship through BB's specialty: defense.