I'd feel so much more motivation for checking out alternative diff tools if there was a better story for integrating them with the review tools in Github, GitLab, etc. I know there's nothing anyone can do about that— it's something the Git hosts themselves have to enable, or I have to see enough benefit in it to go to an dedicated review tool to make the bother of that worthwhile.

I believe Gerrit has a pluggable diff— is there anything more broadly on improving this story?