Metrics are great but can they be expanded?
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Add the ability to see metrics of your play against a specific player and/or friend. It's great to raise the level of play through FRIENDLY competition. Also allow for filters to see truer metrics, such as removing wins/loses of games that were less then X number of moves before abandonment. Getting a win because your opponent had to bail or lost signal after the first or second move feels like cheating. :-)
Some of that already exists. If you go to an opponent's profile you can see your results against them with a link to see all the games. Not 100% sure basic members can access that but it is there.
They already show you your most frequent opponent. You can easily get your win loss record and the results by color.
You want to filter out games by number of moves? What else?
The main problem you have is that as a free member you can't look at games older than 30 days old.
/You probably want to be able to post these true stats, don't you? Why? Nobody cares if you are only 2-0-4 against scronnyronny.