"The names of the grades mean nothing, the percentage of people achieving them means everything. People focusing on the name "A*" rather than something else are part of the problem here."
Better yet, why even bother to go into the complexities of marking an exam, calculating a percentage result, then finding which band it fits in to? Why not just give the percentage mark out in the first place.
After all, why should two people come out of an exam with the same "grade" when one got 100% and the other got 65%?