I didn't feel like it was a great finale as I watched, though I have a higher opinion this morning as it sits in my head. I appreciate the logic of the where the story ended up. But too much of the last episode was about knocking down a not-particularly-resonant strawman, which was that even in these supposedly soul-baring conversations in the past with Mike and with Walter White, Jimmy/Saul only cared about money. I didn't buy that this was true to the character; I felt like those scenes were only there to set up his final turn.
But I like that the last episode delivered a sense of romance while still holding the character accountable for all its misdeeds. It's smarter than, say, the original Star Wars trilogy, where Darth Vader does all these horrible things, but in the end is redeemed because he, um, doesn't kill his son. Jimmy didn't kill Carol Burnett, and he finally sees the light, but still faces the consequences.
I liked the final little detail that his prison work—watching the bread machine whirl—was basically the same as his life as the Cinnabon manager.