I thought the last two episodes of the Sopranos were so good that they could have been put together as a feature film, so we will disagree on that.
Pete and Betty did 180's on their prior personas, which is always disappointing as a series nears its end. Pete wants to be a hitter, and he has as good business survival instincts as anyone at the agency. Dropping all that to live happily ever after with Trudy (who I could have sworn was at least implied to be a lesbian earlier in the series, no?) in Wichita seems like a stretch. More realistic would have been Trudy saying no because she realizes that Pete was FOS, as usual. Given how dislikable Pete is, it would have been fun if she actually turned out to be a lesbian, and said Pete was the reason. I give the ending to this arc a B-. They could have done a lot more with Pete.
Betty suddenly being stoic is also surprising, as is killing her off. I know that the purpose of that scene was for Sally to be able to compare a loving, giving husband like Henry to the cipher that is her father, but I would have preferred if Betty banged some college kid and hurt Henry that way rather than being the martyr. All in all, a solid ending to the Draper family story line.
Having Roger find Don and go to the VA party with Don would have been a great way for the two of them to part ways. I was a little disappointed by the new character and lame, transparent con that got Don beat up. Don should have beat that punk senseless, and it isn't clear why he didn't given the spiral Don is in.