I don't think the laws are vague so much as how we use cookies today. With different mechanisms for different purposes it would (could) be much more transparent

I don't think the laws are vague so much as how we use cookies today. With different mechanisms for different purposes it would (could) be much more transparent to the end users how things work. It would be more like the "save password" feature in various browsers. Of course since all the major browsers vendors also make money from ads this isn't really in their interest.