Indeed, in my opinion you'll never see any of Art's coaching tree really replicate what he accomplished in that 2011-2015 window offensively (and we certainly haven't to date). Success without the revolution, in essence. Scheme-wise it was also a novel variation on the spread theme 10-15 years ago. Defenses can gameplan it better now because they've seen it for a decade.
It's sort of like Lockheed's Skunk Works - they create the U2, the defense eventually adapts and creates higher range missiles, so they create the Blackbird. They create the 117, the opposition creates better radar, so they create the F-35. If you create it, the defense is going to dedicate all their resources to figuring it out and countering it. You're going to have to change eventually, you just want to continually be the one forcing the other guy to adapt. Since it's not their scheme, Art's successors have struggled to do that.
It's sort of like Lockheed's Skunk Works - they create the U2, the defense eventually adapts and creates higher range missiles, so they create the Blackbird. They create the 117, the opposition creates better radar, so they create the F-35. If you create it, the defense is going to dedicate all their resources to figuring it out and countering it. You're going to have to change eventually, you just want to continually be the one forcing the other guy to adapt. Since it's not their scheme, Art's successors have struggled to do that.