I think with Payton's case, some of the resentment with some SR posters and Saints fans, revolves around how he left and his "reasoning" that he was burned-out when in reality, he got a new NFL HC job within a year in Denver and they retroactively, cast some suspicion on his original reasons for leaving in that he was "burned-out" from being Saints HC, not from football in general. This wasnt some major "burn-out" case like Dick Vermeil in Philly following the 1982 season and he leaves and doesn't return as an NFL HC for 14 years, or even Jim Mora's infamous, midseason quit during the 1996 season. He saw how long and difficult of a rebuilding job it was going to be here, post-Brees, so he left.
Still, however, I think if Payton had stayed for another season or two longer then he should've like Mora did, there's a decent chance he does end up having a major Vermeil-like burn-out, or has a infamous, Mora-like post-game profanity-laced histrionics press conference and perhaps Payton felt such an unfortunate incident was building up if he had stayed, so he left before it occured.
I also firmly believe if Payton had drafted Mahomes and he eventually takes over from a retired Brees in 2019 and achieves 40% of the same platitudes he's reached in Kansas City, Sean Payton is still reviewing his list of possible draft selections at Airline Dr. right now for next month's NFL Draft.