I have a feeling McCarthy had a very direct and pointed conversation with Capers that probably covered every aspect of defense. Personnel, player utilization, concepts, schemes, I mean all of it.
I think he looked at players running around in La La land and guys like Hyde spending far to much time on the sidelines.
I believe he saw enough of players like Raji floundering around at positions where they are just not very good.
I also think he saw enough of young players without a lot of experience filling in for injured regulars that were in just way to over their heads scheme wise to be successful.
"Dom, guys get hurt. Young guys will have to come in and do a job. Don't give them 5 different possible responsibilities depending on what happens when the ball is snapped."
I think the D can be a lot more aggressive if it maybe has a little less on it's plate to think about and am guessing McCarthy made this clear to the Dom.
I
"The train is leaving the station."