I'm not sure you can actually say he's assignment sure when he routinely takes terrible angles. Being in the right place in the defense is only part of playing well, knowing how to move from point A to point B is pretty important as well and he routinely takes a detour through point H before getting to point B.
Assignments and angles are two different things.
The former is about knowing one's role within the defensive call, then making adjustments pre-snap, and then reacting to what you see unfolding. I'd score C-D pretty high on this score.
Taking bad angles or missing tackles or just not making plays when the opportunity presents itself is a matter of execution.
Believe me, when most posters on this board were lauding C-D's Pro Bowl season, I was saying I did not see a Pro Bowl performance and that voters did not look past the INT count. However, I don't see any point in flopping the other way in saying the guy sucks. He's playing the same game he played last season. An argument might be made that when the coverage guys in front of him are not playing up to snuff he has to hang back and play tentatively (the "don't break" in the "bend" alluded to earlier).
In the final analysis, he's a solid player who just doesn't make plays with the frequency you'd associate with a Pro Bowl player.
C-D has been paid about $8.3 mil over the 4 years of his rookie deal. The Packers have gotten more than their money's worth.
He will be on a 5th. year option contract next year for about $6 mil. Given the on-going question marks in the rest of the secondary, I would not expect him to be released. For one more year he'll be a core player especially if they part ways with Burnett. Drafting Jones seemed to indicate if not an intent, at least a consideration of Burnett's upcoming free agency. Parting ways with Burnett makes C-D's retention a lock at that price.