Why would that be? Are you unable to remember if you have played a game? Then you did not play it for very long, because if it was good, you would remember, and if it was bad, you would definitely remember, and stay away.
That's like giving spammers a list of games they have yet to spam. People should know what games they have played anyway (if they actually played them).
So negative all of you (though unfortuneatly your right to be ) I wouldn't mind having a list of games I haven't rated yet. There are about 150-200 games I apparently haven't played and as said as it may be it nags at me. If this feature was introduced I could play them easily. It isn't about the points it is about being able to think to myself I have played every game. <hugs pillow>