The DB coach also coaches the safeties. Marcus Cooper was brought in late last year and earned a big free agent contract this past off season. Jefferson was an UDFA and blossomed. The safety from Alabama that preceded Jefferson improved. Swearinger was even grabbed from the scrap heap and became a sought after free agent. I don't think anyone can complain about the DB's the Cards have put out there.
Other than Jaron Brown becoming serviceable, I don't see any WR's outperforming their abilities. Agree, John Brown has been hurt but he and JJ have regressed. Chad Williams is a wait and see. How many times do we hear of the WR's running the wrong route? These aren't rookies out there. If you're going to hold other coaches accountable for missed assignments, Drake is too.
My comment about firing the DB or CB coach was merely an example - I actually like all of our position coaches. I feel like our weaknesses are at the coordinator levels. Can't fix the offense without firing the head coach, but you can say that there approach to the run game (design wise) is garbage and needs to change, you can fire Bettcher (don't think they will) and should fire Amos. Bettcher needs to improve if they keep him next year, not certain how you handle that...but the assessment of his defense has to be on the table as not good enough to continue without changes. Firing position coaches won't fix it - we did very well with these coaches in the past - Bettcher is the change that occurred.