> Even if we agree on a set of new tags the usage will still be based on
> individual interpretation, which brings us back to square one.

I agree. New tags won't help us much.

> So no, let's just accept that these things are subjective and apply common
> sense to make the best use of them.

I meanwhile do think, though, that for "best use" it will be helpful to
add my Rev-by to my SoB when I really did a full review (and not just
trusted other reviewers). To properly document the process of a patch.