Mainly because right now, because it seems no one can agree on what the correct interpretation of terms like "reasonable" in Rule 2 on this server. So it wouldn't be fair to expect players to behave in the same way.
I am genuinely curious though about your opinion on what makes good roleplaying:
What do you consider to be acceptable RP behaviour on this server? Which players did you see in your time or now are consistently considered to be good role players and why?