So, notability guidelines serve to stop idiots deleting worthwhile articles? But they don't serve to justify deletion? That could be an okay tack.
Meta-guideline: "There can only be hard rules for keeping articles, never for deleting them."
Sound good?
Steve
WP:MUSIC has its problems. Even so, IMO, WP:MUSIC is more useful as a quick check in which passing its guidelines affirms notability with no further argument required. Failing the WP:MUSIC guideline just means that none of the quick and easy ways of describing the subject's importance work. It doesn't mean that the subject is not notable for a less common reason.