GitHub's PR workflow doesn't nicely support being able to review individual commits, realise which comments are associated with which commits, etc. Or shipping

GitHub's PR workflow doesn't nicely support being able to review individual commits, realise which comments are associated with which commits, etc. Or shipping individual commits to main, while working on some others (unless you allow cherry-picking and direct push to main). Or amending a certain commit with respect to feedback and seeing a diff from the previous patch of that commit to the next. If GitHub's unit of change were a diff, and not a branch, then that would work pretty well.