Better it be a deep dive into developer sanity, a more important but comparatively under-valued metric.
But on non-subjective metrics it seems like LLVM PRs on GitHub are gathering noticeably less discussion than they used to enjoy as Phabricator diffs.
Matches my experience totally. It devolves into a heap of garbage. In comparison, with (incremental) mailing list-based review, it's not difficult to go up to v7 or so.
> But on non-subjective metrics it seems like LLVM PRs on GitHub are gathering noticeably less discussion than they used to enjoy as Phabricator diffs.
That could be a consequence of GitHub making it harder to comment sensibly.