The password option has been discussed a while ago, it wasn't done because A) whats to stop people giving it to their friends, B) if we stick it in a post somewhere, how do we know that they actually read it?
A possible solution to A) would be giving unlimited characters (or just more then 5) per player account and then giving each player account it's own seperate password.
Problems: I've got no idea if it can be done and if it can it'll mean loads more work for the admins, who have enough to deal with now.
As for B), we'd have to have a quiz on the rules or something, but then again once one player knows the password it won't take long for it to become common knowledge.
The other, seemingly, popular route is to do a witchhunt of players/factions/groups who regularly break the rules, annoy people, lie, cheat, fail to RP etc.
It doesn't work, it just lowers yourself to their level, but that hasn't stopped the AW, Bs|, HF and a few others doing it twice now.