The main issue I kept having when trying to do this with just git is then managing all the branch names to be attached to the right moved commits, so that my stack could be reviewable on github's open PRs.
Does jj help with that at all?
I've experimented a bit with git-town.com (OSS) and now everyone at $DAYJOB uses graphite.com (SaaS) which does that part very well.
It’s one of the core features that rebases, including branch names (bookmarks in jj) work ‘correctly’. You can rebase whole dags, including merges, with multiple named heads with just one jj rebase -b.
`--update-refs` flag helps a lot in vanilla git. That and `--autosquash` should probably be default flags to `git rebase`. I also don't entirely trust rebase without `-i` (`--interactive`), personally. I hear there is talk about shaking up the out-of-the-box default flags in git 3, and I think rebase should especially get new defaults.