Finally, I broke down after years of pressure form my sister to watch the series. She was right. It's the best of its type in the history of TV.
For me, the silliest hot take I've seen/heard (not in PT) is that Peggy is actually responsible for the Hilltop ad. The staging of the final scene with Don into the actual commercial makes it entirely clear to me that the concept was his. Also, the chance that M-E would roll the dice as they did with an "arty" ad to roll out a "REAL thing" campaign that someone other than Don created is just about zero. Having said this, I could totally see that Peggy came up with the seminal campaign slogan (It's the real thing). She was proven to be excellent at taking Don's concepts and putting a pithy phrase to them. So, insum, the ad simply had to be Don's, but the campaign slogan (smartly incorporated into the ad), could have been Peggy's.
My favorite character was Roger. The ultimate happy ending for Don would never have been possible if he had not forcefully defended him after the Hershey debacle. Sure, there was significant self-interest involved. I also believe, however, that his better nature kicked in as his best friend was in real trouble and being attacked by the jackals in the room.
Finally, I am grateful that I did not have to endure the fits and starts and uncertainties there would even be, new seasons.