I hadn't really thought in terms of including the hobbyists who NCNS, but I have no problem with that. I certainly hear comments from providers about how many times they got NCNS'd in recent weeks. IMNSHO NCNS is rude and inexcusable no matter who the offender is.
I don't think there will be any problem if one's name (handle) shows up only once. But such a forum would go a long way toward making it clear who the repeat offenders are.
Anyone called out for an offense should have the opportunity to dispute it, but somehow we need to keep the "he said/she said" from getting out of hand, as it frequently does in the coed discussions.