On paper, Jackson is exactly the guy you pay for. Hall and Echols are fine as CB2 and CB4 with our young nickel backs.
The Patriots have paid for cornerbacks in the past, so you wonder why they would let Jackson go. Do they not trust his character? Do they not trust his abilities? I don't think Jackson is a shutdown cornerback like Gilmore or Revis or some of those guys, but he's still very good, and he is a proven playmaker. We've been so starved for takeaways on defense for so long where I would love a CB who is known for his ball skills.