I agree he is overrated, but he would have been an easy upgrade over any of those guys I listed. While pats struggled, I don't think he was the main reason for it either.
I don't know that he's an upgrade over Williams.
But more importantly, he wouldn't start over Whitner at SS or Goldson and Smith at FS, so can he contribute on ST? I think Spillman is a better ST guy and Jones was drafted specifically for ST, so I would assume he's better than Meriweather as well.