I think that serious rpers like you and others should take initiative to start educating others, get the idea of the rules and what is acceptable. the biggest part of the Rules is that it is self policing. Let these people know that their characters need to be within the realm of plausability. Yes, put it among yourselves to do what the Roleplay rules allow you to do.. Self regulate.
First step perhaps, is to set up a thread in the Order channel, get ideas for the community what the rules on the RP server should be. What is acceptable or not, and get some signatures to it from players ON that server. Then, take the document to the devs to request that it be made an official document supported by the community as an update to the Roleplay rules. As long as your policy includes what is already there, there should not be a problem. that document can clarify the servers position on "creative histories" or "Non-Lore information" to whatever the server as a whole feels is approprate.
Next step, self regulate. Do not be afraid, that if someone is constantly out of the spirit and intent of the rp server, send a ticket to the devs with the log to request they be transferred off. That is YOUR right, as a player on Order, and your responsibility to look after the quality of rp