TP!
Beat me to it!
I think this is really huge. The problems with the Pat's defense have really been overstated.
Wilfork, Mayo, and Kelly are all coming back, so the middle is going to be bolstered.
While Dennard and Ryan are not elite CB, they're darn good 2nd and 3rd CB, and McCourty has looked great at FS. All they really need is to get the other safety position resolved, and Harmon started to show signs late last year.
LB depth is weak; I get that. But people forget that the Pats spend 2/3 of the time in sub defenses with only 1 or 2 LB on the field. So the trio of Mayo, Collins, and Hightower isn't as thin as it may seem.
Finally, Jones and Ninkovich have looked great on the DE spots. The only real weakness is to bring in depth.
So overall, I'm quite pleased with how things are looking.
I'd put the Pat's needs on defense as
SS
DE (to mix in with Jones and Nink who play way too much)
LB (for depth)
Another random thought: Arrington signed a pretty hefty deal at 5-6 million a year last year and is now the 4th string corner in my book. Should the Pats cut him, bring in someone cheaper, and use that money elsewhere?