First, let me confess that I have not run this by my partner. This is because my partner seems to have disappeared. Should he show up on the scene, he may suggest improvements or alterations.
My proposal is that rule #107:
No rule-change may take effect earlier than the moment of the completion of the vote that adopted it, even if its wording explicitly states otherwise. No rule-change may have retroactive application.
Be transmuted from immutable to mutable.