We'll never to do something like that, it makes cheating with statistics really easy..
But it'd be a cool feature for those of us who like to check out how they do/did. I love statistics... talking 'bout stats:
When will the Matchstatistics stay as they were even after people leave?
yeah, we can have alltime stats for each player, but they will not be used in the league or so.....its just for yourself to check (with menu point for it), too easy to cheat
There is a central database for the game StrikeForce, that is not "official" (ie not made by the SF team or integrated into the original mod by them).
It's a mutator that tracks the stats of people by the names they play, and keeps a cumulative score.
Some php/mysql/etc monkey could make it work with a community this size.