That'd defeat the whole purpose of the system we've got now imo.
It's kind of a "reward" so to speak, after posting a certain amount of posts. Once a week, without any other requirements seems pointless.
Besides, you're a donator, that's a solution. You can change your name, user title, etc, without limits and as much as you like.
Unless you don't have the patience to wait the maximum amount of 24 hours it takes for Liz to actually apply the changes ...