Love it. Although I'm not sure which is the darkest timeline given https://www.howclosetoblackmirror.com/
Isn't it depressing that San Junipero, arguably the only happy episode, has the lowest progress score?
Eulogy and Hotel Reverie from the newest season are at 70-75%, and I think they both end on a similarly bittersweet note like San Junipero. The one with Miley Cyrus is at 65% and is about as happy an ending as Black Mirror episodes get.