I don't know about a separate forum, but possibly something like a GM ranking. Not neccessarily shown like skill ranking is, but if maybe you could see their GM ranking if you clicked on their user name.
This is something that I thought of before when I had a negative experience from dealing with someone here on CP.
I would more so say it isn't necessary because I have dealt with many ppl here on CP, and have only had 1 bad exp.
I would also say that if there was rankings, it could lead ppl to sell tickets to the highest ranking user instead of first come first serve which is what is usually used.
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