Just a totally horrible idea. Cheats those women who can and do make it without having the scales tipped for them, too.
Cheats both, actually. The women who can and do are tainted as getting a preference they didn't need, and the ones who do need the hand are more than likely to get washed out. Thomas Sowell's two part column Attacking The Truth discusses how preferentially admitting students to schools when they otherwise would not be admitted does them a huge disservice.