I would not want to feel compelled to finish a game per month to protect BKR. This may also hinder players of many game types. Maybe "hiding" inactive players is a good idea. Ratings boosters are probably not worth worrying about unless flagrant and disruptive. Just beat them and live with the few extra points you probably didn't deserve. I would like to think most of us, as Noholdsbarred stated, simply use BKR as a means of engaging opponents of a desired skill level. Someone who only plays lower rated opponents should have that option, if they are that afraid of equal opposition they are probably not THAT good and will drop many points every time they occasionally lose.