One thing Capers brings is accountability for your actions on the field, which didn't seem noticeable last season in Green Bay.
Can't echo that strongly enough. Last season, and indeed throughout Sanders' tenure in general, players were seemingly never held to account for sub-standard play. What I think goes unnoticed is McCarthy's hand in this as well. It's a bad reminder of a problem that was widespread under Mike Sherman. Given his mandate to turn around a failed defense, I fully expect Capers to have complete control over his roster and to 'trim the fat' where necessary.
"I firmly believe that any man’s finest hour, the greatest fulfillment of all that he holds dear, is that moment when he has worked his heart out in a good cause and lies exhausted on the field of battle – victorious."