They deserve to be dealt with by Frontier, who can prove if someone is Combat Logging or if they have other issues going on (of which there can be many).
Same goes for a "Griefers" list. Anyone can be falsely added to it. Which is why it's down to Frontier to sort it, not players.
I found myself on a combat loggers list once, got myself taken off when I pointed out the problems with the instance (Truesilver broke it when he dropped in late), so I can sympathise with one-off players who get falsely accused due to a genuine issue, but.. We all know there are lots of players out there who just log out of combat all the time to avoid consequences. Frontier do nothing serious unless there is some drama like the SDC investigation.. even then the response was short lived and selective.