> The other style of commit-by-commit reviewing, where I see all of the work in progress commits, I don't find valuable at all and I _definitely_ don't want to see on master.

This is the style I use for code reviews.

There's not a lot of tooling to support it, at least with GitLab, but git-playback [1] is kind of interesting.

[1]: http://codingfearlessly.com/2012/05/14/git-playback/