Crown laws in game can only be changed once per ruler, have to undergo the voting process, bla, bla, bla. I was just going to mess around with decisions to cut right to the chase. I'm just playing around right now, getting a hold on things. What CK2 really lacks is realm specific flavour decisions seen in other PI games. For example, in EU3, France gets a special decision which lets it switch to Absolute Monarchy before everyone else. It's a nice little nod to the Bourbon absolutism. I don't know where I'll apply these law changing decisions yet, but the first step with modding is always learning how to do it first.