We're trying to rewatch Invasion now that it's concluded (or cancelled). First season is heavy going, lots of parallel plots that only slowly intertwine if at all, and not necessarily so much happening in every episode.
Next will be a For all mankind rewatch to be fully prepped for the upcoming season 5. Let's see if we can time it so we can binge the new episodes without a week's wait in between...
Basically. I have a spreadsheet with 1,300 watch items. Here are the first 10:
All Our Yesterdays
The Inner Light
Time's Arrow
Time's Arrow, Part II
The City on the Edge of Forever
Storm Front
Storm Front, Part II
Little Green Men
Far Beyond the Stars
Carbon Creek
It's been a lot of research and adjusting as I go along. Plus a lot of semi-arbitrary choices between Memory Alpha order, Star Trek Chronology order, etc.