One day there will be a 'super dumber fantabulous A*'. What we have is enough. If too many people are getting the top grades make the syllabus harder, put in some integration and differentiation of trigonometric functions and take away any data book. If someone gets an A*, congratulations to them, well deserved, but if the exam board think too many people are they should just make the exams a little bit harder. I remember for our A Levels a lot of exams were so easy they had grade boundaries of 73/75 for an A* which didn't meant to get it all you had to know were basic principles and not make a silly mistake in the exam.