As an aside, I do believe that anyone abusing the service forfeits the right to privacy. We plan to update our ToS soon and the draft our lawyers have written includes that provision. When it is introduced everyone using the service will have to explicitly accept that if they are caught cheating they can be publically identified by us.
And if wrongly accuse someone, will you be able to scrub their dox from the internet?
I don't see what this could possibly achieve against actual cheaters who like you said use VPN and fake e-mails.