It seems to me that if you want some sort of money creation management role in the economy, you need to restrict people's ability to lend and borrow from each other. So if you wanted to lend me money, or you wanted to borrow from me, we would have to apply for permission.
Off the top of my head, I can't think of anyone who's tried to restrict people's right to borrow from a willing lender. It doesn't seem like a good idea intuitively, but I do think it's something you must do if you want to have a money creation manager.