I agree. However, both the Cowboys and Saints have hired Rob Ryan to fix the same problem on each of their teams. It hasn't worked out yet.
I still think there is a talent mismatch on the D side of the ball, though they are trying to address it. ILB is still a gaping hole at times and the front three (or four) don't help the weaknesses of the middle 4 (or 2).
However, I still agree with Patler that under the new practice restraints and McCarthy's careful control of team regime, working completely hand in glove is more important than ever. When you had six weeks of camp with 4 weeks of 2 a day and a lot of trading, you could fix things on the fly. Now a days, esp with Thompson's go slow approach with FA, you need a year or more to get a fix in the pipeline.