Open Challenge: Make a better FRC ranking algorithm

[Billfred]

I've been involved with FIRST for three seasons now, and with the exception of some oddities in the Hatch software forcing a team update to fit it midway through 2005, there hasn't really been much change to how teams are ranked. Robot sizes have changed, games have changed, weight has changed, point systems have changed, technology has evolved, but at least for as long as I've been around, it's been QPs and RPs equal to the losing score.

So just for the fun of it, how would you rank teams if you ruled the world? Any method is fair game, but bonus points to those that are plausible enough that FIRST could actually use them. And assume the game will be similar in format to Aim High, to keep things simple. (I'll post mine later.)