Inherent? I don't see how a more *exherent* set of criteria could be chosen.
Well, you do have to distinguish notability from the various measures of notability we use.
[1] Significance shall be demonstrated through thine coverage, and the level of thine coverage shall be significant. Trivial thine coverage shalt not be, nor needeth it to be exclusive, provided that it is at least significant. Usenet postings from 1995 are right out. Once significance, being the required level of coverage, be established, then thou mayst in good faith lobbyeth in yonder AFD fracas for swift retention of thine presumedly notable topic, and thy deletionist foes, being time-wasting trolls in mine sight, shalt politely go fuck themselfs.
You need to put that somewhere more permanent than an email! It's brilliant.