It would not be good to close off answers from "lower
level" monks. As someone else mentioned, there is no telling
who might know the good answer. Peer review seems to be
working (for the most part) as I have seen incorrect answers
gracefully pointed out and the error corrected in a friendly
manner. A group of editors would be a good thing; but do not
prevent someone from adding what they know; or learning by
having a mistake explained.