We're usurping even more power.
Usurping would imply that you were taking this power from an existing body. No one has previously stated having dominion to decided what is or has a point. Really you're just making a preemptive clarification of your already existing rights, should anyone ever question it in the future.
Well, this thread appears to be the entire legislative branch of the forums. It's up to us to codify what is or isn't a point insofar as such matters should be written down in law. The moderators can only work within the framework of the FAQ (as there is no forum constitution to appeal to, to overrule FAQ entries).
As such:
28. (a) No sidings, platforms or buffers. The forums are not to be used as a train set.