You should have enough data to evaluate Sean Payton legacy in New Orleans. Handicapped himself for most of Brees' prime with ineptitude on the defensive side of the ball and managing his staff (DC hires, keeping non producing cronies, bad signings and ideas...like just try to copy Seattle def. scheme). Defense was all time bad and completely nullified his offense.
He learned some lessons and got better, but was too late when Brees fell off the cliff. Still had a shot but got outcoached at some key moments and shafted by the refs at the worst possible moment.
As good as he was with the offense, he was that level bad (and beyond) with the defense.
How he does in Denver with the defensive side of the ball and who he lets run that will be key to his outcomes there...