pretty much everyone good in the region knows the oli MU from me, or andyg or blackwaltz when they played (and maybe l0g!c)
and brood wouldn't whistle 5 mk upairs in a row or waaaaay to many nados...just sayin :3
but, to seriously respond, its just hard to do that, when you update a PR, you have to take into account every player, every tourney each player has gone to, and the players at those tournies, thats why updating it monthly or so isn't done, too much time, besides, stuff like that doesn't instantly happen, it happens over time (the only exception is when new players appear)