I'm no perfectionist, but I can be very particular about some things, and I think every Tabletop campaign I've run, I wouldn't want to revisit the setting.
Starsung Distance: Factions are two-dimensional, Rend Extraction incredibly poorly integrated as a core concept
Ghosts of Parliament: I started with BitD's book setting, Duskvol, and made changes as I went. Turns out I think Duskvol sucks! What a boring place
Swords Are Sorcery: lol
Mars Colony: Best contender just cuz so little is written

I was thinking about doing more Starsung Distance, but I realized I don't think my worldbuilding was good enough for me to go back to it. It supported one campaign, I should be grateful I got that much out of a setting I originally built as part of a Metroid fanfic (that no one else has ever seen) in high school.

As I grow older I grow less vulnerable to sunk cost fallacy, fortunately. Would have been easy to keep this going and been mildly dissatisfied every session- the heck with that. However, this still leaves me with two problems- wanting to run a second campaign on the Scanline Tabletop feed alongside Embers, and craving more tabletop roleplaying in my diet. I can do no roleplaying, that's fine, but if I'm doing any I want a decent clip. And Embers is a very slow campaign.

not as in "it's better than everything," as in "Trigger makes the worst written shows in the world, even a single W is astonishing"