By designating them as Tier 6, they've got to be a level of uselessness that I just don't agree with, unless you're completely redoing pre-reqs for other feats and PrCs. At that point, we're not poking fun at weirdness of a given rule's interaction with the rest of the game, but clamoring for a wholecloth rewrite. That's been done several times, and so far as I can tell, is not the point of the thread.