If Tristan Wirfs can ass-ume the starting RT job from week 1, then RG is the only really questionable spot along their OL...
Their CBs are young & still very raw, but their performance improved fairly well during the 2nd half of the season...
If Antoine Winfield (or Mike Edwards, or Justin Evans, or Jordan Whitehead) can ass-ume the starting FS job, then they are just a Strong Safety away from having a possibly dynamic young backfield during Brady's two years there...
So they might not be as many better players away at OL & DB as you might think, though I'm not a big fan of their RBs either (missing a clock-killer)...