I totally agree; I got the impression too, that the Brits already decided to dump Duck and keep Don instead. Duck has played his part, he isn't needed anymore, Draper in the other hand is not as easily replaceable.
Looks that way. Once Duck had his outburst and they sent him out of the room with the aside "he never could hold his liquor", and Roger asking something like "this doesn't affect the merger does it?" it seemed as though Duck's fate was sealed.
There were many good moments in the episode. None better than Pete and Peggy. What a completer roller coaster few days for Pete. Walking in to deliver bad news on Clearasil and getting promoted instead (although with Duck potentially gone, maybe not). Don giving him a real, and rare, complete nod of approval. Confessing his love for Peggy, only to find out he has a child out there somewhere; as his marriage - ironically - crumbles around the issue of adopting.
For Don the question is has he really turned it around? Maybe. The note he wrote seemed very sincere, and, we did see a scene of rebirth of sorts at the end of the previous episode. We know he wants to do the right thing because he talked about trying to "claw his way into his life". And the Kodak carousel pitch (last season?), was another sign he once really cared. I know Betty is positioned such that I am supposed to have sympathy for her, but I can't. I think she's a fascinating character, but I find her difficult to like. Although, to her credit, when it looked as though she was debating whether to hurt Don in kind with confession of her affair, or to tell him about the pregnancy, she chose the pregnancy.
9 month wait huh? That's a long time.