I know that members with high reputations can get involve in moderator activities. For example, I have recently started to review and vote on posts that have been put into the review queue. I have seen that questions that get votes to close seem to require a certain number of votes before being put on hold and entering the review queue. It appears that a moderator can put a post on hold without any other votes. Am I right about this? Can members with high reputation who are not moderators do this also?
Another observation I have about the review queue is that any edit of a post can kick it back into the review queue for voting to reopen. To reduce the burden on the moderators and others who vote in the review queue shouldn't there be some restriction so that the edit has to have some new content to be put back into the review queue?