I understand your point of view.
But first of all, it's hard to monitor the wcs server as it is, if we go banning people like you suggest, we'll have to make a special database just to know how many times a person has done something wrong with wards/lego man etc xD
Second of all, we'll obviously won't ban players who are new on the server and use serpent wards in a wrong way.However, players which have been with us for a few weeks / months should know the rules by now . If those people are still doing stuff which isn't allowed, then they're just provoking us and asking for a longer/perm ban...