Young had a very good 2011 and needs to bounce back to that. I'm not worried about the DEs with Ansah, Young, Jones, and Idonije. That group is more than good enough especially compared to last year. And not just pass rush, run defense too.
Bell was a diamond in the rough found by Mayhew. To not credit Mayhew for finding him no matter how he was obtained is absurd I don't care if Mayhew finds them in free agency (Tulloch, Quin, Bush, Jones), trades for them (Houston, Sims, Schefler) or drafts them early or late. Just as long as he finds talent and Mayhew has for the most part.
Since Mayhew is good at 1st round drafting, trades and free agency, he gets a big pass for Rounds 3-7. Round 2 the talent is there but we have some damn bad luck with injuries. Round 2 you can take injury risks, we'll see if Delmas/Broyles/LeShoure/Slay can salvage Round 2 Mayhew this season.
Plus I think it is way too early to give up on Rounds 3-7 picks from 2012 or 2013 unless they are cut and gone forever. Even Fox/Young deserve one more big chance.