I don't know about extreme political views not being tolerated. I would change it to:

"Feel free to express any political, religious or philosophical view. But also expect other posters to criticize your beliefs. Please keep debates focused on the topic being debated. Personal attacks on people with different viewpoints will not be tolerated. Note, however, that being told that you are wrong about something does not constitute your being personally attacked."

(This could probably be worded better.)

edit: Could there also be something about using the search function before posting, to avoid starting new threads on topics that have already been discussed (e.g. casting threads)

Also, what about posting in character, role-playing and pool parties (and the last 2 should be defined)?