I'm going to add something here I think can help the whole quitting thing, sure like the handicap thing there may be no perfect solution, but I think WGT has to try at any rate.
Since WGT is working on a reputation rating already, maybe they can have it represent quitters but ALSO wankers to help curb general bonehead and abusive behaviour thus the reputation rating becomes a 2 part rating, and I think this is important.
So quitting will knock a persons reputation down automatically, not sure how they are going to calculate but it seems pretty simple, everyone starts off with a 1500 rating, everytime they disconnect they get - 1, everytime they finish they get + 1.
For part 2, when someone plays a match with a wanker, a non-pleasant person, abusive person etc, and there are plenty that people would like to avoid in general, after the match they can add a one-time only - 1 to his/her score, this can only be added against someone who you have played against for obvious reasons. The only downside to this is there will be some false ratings at first where the "bad" people try to knock down the good people. However, there are far more good people on this site so this will be shortlived and after a small amount of time, it will become very obvious who is generally not being a very nice person and if someone gets too many negatives in this way all the - 1's they gave out get cancelled.
For this reason, the reputation needs to be detailed in a way that someone can look into the persons profile and reputation shows up as a "stat", with number of times quit and number of negatives given by other players.
I do think this is an important step WGT can take to help curb general abuse on their site, the internet is full of nasty people sadly and this will really help.
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Oh, and please setup a special section in the forum for "general complaint" threads. The reason this would be good is to keep all the cheater, quitter, TWO is better, I dont want to spend money threads all in one place to stop them from polluting the WHOLE forum, and they will never stop so why not deal with them. When a thread shows up in the wrong place it simply gets moved by an Admin to the complain section, this will help to keep the entire forum more useful overall.