I kind of loved the episode! I saw the "logic" of Don's quickie decision to propose to Megan. He's spent a year watching the mother of his kids become an evil robot, and almost every other aspect of his life was turned upside down as well. He's grabbing for some new calm and stability, like a shipwrecked man spotting land, because it dawned on him that is was even possible again. Of course it may quickly blow up in his face, but I liked the twist.
Betty is a lost cause. I'm not sure where she can go from here, she's really hit bottom as a person. Maybe she'll crack up and Don will get the kids with his new stable home? That has the potential to blow up as well, so I like the chances of it happening.
I just knew Joan was pregnant. And the way that characters come and go in this show, who knows, Ray Wise might suddenly pop up in the season premiere if that golf game went well. I don't think it will bode well for Ken either way...
I only wish that we saw some of Roger's actions (and inactions) catching up with him tonight.