Need: OLB/DE and OL
Want: DB depth, RB depth, deep threat WR.
WHY?: TE depth
I agree with this assessment right here.
Your 'needs' are right on, IMO. O-Line, and Front 7.
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Wants:
RB : If we choose a RB in the draft, or even add a lower-mid veteran presence, I think the issue is solved immediately. We may or may not get the HR threat that we all want, but an early (1st thru 3rd) or mid rd pick should be just fine. We can also add an additional later pick as added competition, and even the possibility of a cut/low-mid level vet as additional competition/depth, but I do not personally think that much money will be sunk here. Then again, just when you have a hunch on something, Belichick can surprise you, and feel a different way.
CB : With McCourty and Bodden, plus Arrington, Butler, and even Wilhite, I believe that we will add a CB or even 2 via the draft. With the addition of a pick or two as added competition, the return of Bodden, and Patricia as a coach, I think this area will be fine too.
EDIT: Not just fine, but certainly improved (CB). Bodden and McC as the starters, of course that not only helps right there, but also moves a combo of
Arrington
Butler
Wilhite (have a hunch he may not be here if our draft pick(s) look okay in camp)
Draft pick or 2 + possible cut addition/low-mid level vet
as competition and depth for the other 3-4 spots