Do you know how many people play RO? Thousands. Do you know how many people are banned / punished everyday? We would have to add at least 10 entries per day (since that's the amount of players that'd be actually reported here, although probably hundreds are banned each day). And that'd be way too much work.
Players can disappear easily. Just change your IGN & e-mail, problem solved. As a GM, you could be tracked because of the servers you have worked on before, or maybe because of your skills. But as a player, there's not much people can say about you.
Besides, if players see a cool IGN, they'll copy it on another server. What happens if they copy the IGN of a HoS'd player?
Too much trouble, too easy to avoid. Not a good idea, in my opinion. Sorry.