Of the six episodes that could be considered finales (Assignment Earth was filmed with the understanding it could be the final TOS episode), All Good Things is likely the best. However, it doesn't check all the boxes of a finale. It's a Picard romp. The other characters don't grow through the story. It also feels as if there could easily be another episode in a few months (and in a sense, there was). Assignment Earth was someone else's pilot. Turnabout Intruder was sexist. As for Endgame, I find the whole future Janeway thing--her motivations and actions--offensive, a departure from the character. These are the Voyages lacks dramatically, but more importantly, our heroes aren't truly present in the episode, and they are not really interacting with the guests. What You Leave Behind wins mostly because keeps its eye on the ball: give the characters interesting stories and a good sendoff, be expansive, resolve the key stories, and park the series.