I liked that finale. Carrie went full circle. I can't imagine her living a normal life and she's playing Yevgeny. My only slight rant is that I'm sure Yevgeny can't be that thick? He knows what Carrie is capable of, he's an agent himself. But the main thing is, even though Saul & Carrie won't be seeing each other as much anymore is that they can still work together as Carrie "replaces" the Russian spy that got killed.
There were instances during that season that I thought Carrie was gonna work for the Russians and while that ending is sorta like that, I'm glad that she's there in Russia because she won't be welcomed back in the U.S. after what she did. And I'm super glad that Saul's alive and will hopefully be going to therapy.
Imo, it's a better ending than some of the other shows I watched.