I enjoyed the season (series?) finale of Agent Carter overall, though there were definitely some things it did better than others.
The wrap up of the major plot line, centered on Whitney Frost and zero matter, seemed a bit simple and tidy for my tastes. Frost lost any real menace she had in this final hour, suddenly reduced to a rambling loon scrawling on the walls. She was strangely ineffective in the final showdown, using none of her abilities and just knocking Semberly out before staring uselessly into the darkness until Our Heroes could easily take her out. Then she was back to a rambling loon again, this time in an asylum. Not a strong showing for someone who started out the season as a compelling villain.
But if the Macguffin was less than satisfying, the character beats were quite the opposite. Agent Carter has really leaned into character as a strength this season, and they saw that through to the end. Great one liners were given all around, and fun sight gags too. (Rose was riveting. Get it?)
And if this is the last we see of Peggy Carter on television, we at least got great final scenes between her and the other characters. Jarvis was thrilled just to give her a ride to the airport. She and Thompson had a final detente. (Very final, given the episode's coda.) And of course, Carter finally shared a kiss with Sousa.
I'm not sure if Agent Carter was ever meant to be the show about "the creation of S.H.I.E.L.D." -- but it does feel a bit incomplete if the show doesn't ever get there. And yet, the show definitely grew to be much more about the characters than the story. So perhaps it's going out on the right note after all. (I for one am not banking on a reprieve from ABC.)