I hope I don't come off as pedantic but, presuming I understand you properly, I wouldn't describe these people as meta-experts. Unless I'm mistake, the prefix meta- means, from Wikipedia, "about (its own category)". If this is right, a meta-expert would be an expert about experts, or an expert on experts.<p>Thus, it's my opinion that calling these people meta-experts could imply something different than what you intend, particularly to people who don't read the article fully, and if it takes off as an Interblag "term", it could cause some confusion (although it could be that I'm just crazy).<p>Perhaps I could interest you in neo-expert?