Yes, that's what I'm stepping through now, as you've done. It is very tedious.
But my interest is not just local. I send media to clients that has to be bullet-proof, so 'within specs' isn't close enough. I can't deal with the problem of the client not being able to read my media, or having read problems. I have to be able to assert with confidence that the burned data was far within spec when I burned and tested it. That will eliminate one source of problem and frustration, with the meter running on both ends while we wrangle over optical media read errors.
That's why I found your systematic tests so useful -- because with that sort of stepping through the different test drives you can identify the causes of poor burns and eliminate the unit or media from your immediate use.