I think Women in the front-line , and especially women in the front-line Elite. Is a very very good thing.
THAT, being said. The idea, that you would lower standards to admit more members, destroys the whole point of being a Ranger.
The Rangers are the Rangers, if you can't run 50 miles without sweating, kill 20 men single-handedly and then hold the position you took from those men for a week. Then you shouldn't be a Ranger. Its what they are trained for, its what they do, and any drop in TRAINING standards, will exponentially damage their combat standards.