Marbles are unfortunately rarely black or white. There are many shades of gray. Not like a baseball card or coin for identification. Grading is a bit like CAC marbles, where everyone thinks they have one, even when they don’t. Everyone thinks they have a mint marble, even when they don’t. There are some fairly good grading guidelines, but not everyone agrees and it seems to be subjective depending upon whether you are a buyer or seller. I understand your pain, but even if a committee was formed, I seriously doubt there would be a large majority of collectors who would embrace their decisions. When you read the threads on TMC or AAM, the experts are often very divided. I was in medicine for 45 years and there is a saying, “ there’s no always and no never in medicine.” Seems to be somewhat true with marbles.