I agree wholeheartedly. So many of our laws are not just archaic but arbitrary, as your examples point out. I've never understood love potions especially.
We should also make sure that a right to a fair trail is included for everyone, magical creatures included.
We should sit down with the books and start drafting. We won't need to throw away everything, but there are few laws that won't need some sort of reform. Obviously we shouldn't abolish the current legislation until we have something to take its place. Our group is small but that doesn't mean we need a period, even a short one, with nothing being illegal.