Why do not you want to make the system of 3 penalties? If a person is banned and he values his account, he could have paid some amount in the BTC in fund forum. The first time is not big penalty, the second time is the big penalty, the third time is permanent ban. I think it would be so fair.
Have you know that even on the reality, plagiarism is a
theft of someone's statement. That is the forum's law and rules and regulations. Your suggestions were too ease and could only make the forum a nest of spammers, plagiarist, and shitposters.