For fear that those who want a moderator might just get their way, because those of us who don't have not spoken up, I vote NO MODERATOR/MODERATORS/BONSAI EXPERTS BY DEFAULT/LEDGENDS IN THEIR OWN MINDS/ BABY SITTERS. Most people who want to be moderators are seeking only the power of that position. Remember the proverb: The quest for power is the last refuge of a failed life. Don't ask, I can't now remember who wrote that quote. I have seen it exercised in other places by people that do not have a clue what they are talking about, or a vague idea about the finer points of a discussion. Now before someone jumps in here and says; "Oh, that can't happen", several years ago I would have agreed. But since then I have had it happen to me. The result was that a pile of foolishness was passed off as a legitimate, viable point of view simply because a moderator jumped in the middle of something where they did not belong, or have the expertise to make a contribution, other than to shut down a discussion.
It's easy to jump into the middle of a urinating contest, but not so simple a job to do the same when a heated discussion arises about some sort of critical information, technique, concept, or theory. You want to change the nature and temper of any site make people post under their own good names and see how civil things become, or how quickly the trolls in disguise disappear.