I will admit that McCarthy has been better than I expected he would be as head coach. He's changed a few performance patterns that had been in place with the Cowboys going back even before the Garrett years.
At the end of the day though you have to ask, is the team better with McCarthy and a Quinn-less defense or is it better with Quinn as head coach with his defense and a new offensive scheme.
I feel bad because McCarthy is not a bad coach or a bad guy, but the defense has failed the Cowboys so many times, especially at key moments, going back many years. If forced to choose, I would choose to keep the defense over the offense.
The Cowboys have basically had the same offense for the last 15 years. If this season ends without a Super Bowl appearance, I think it is finally time to accept that it is time to move on from the offense.
Sure, the next OC may be bad, but they may also be great and bring excitement back to the offensive players and do for the offense what Quinn has done with the defense.