> There have been lots of projects over the last 10+ years that have been riffs on "It's Git, but <better in this way>", but none of them have really caught on beyond a small, admittedly passionate group.

I don't think so. The only ones I know of are Pijul and Jujitsu which you mentioned. They're both quite new.

> you're already doing centralized version control; you're just doing it with a confusing distributed version control UX

Sort of... But actually, as soon as you go offline it's distributed.

Anyway I think more alternatives is always better and lots of the issues you listed in the readme definitely need solving, so good luck!