So much of the Spider-Man mythos is based on him being a young man who has lost his father figures and ends up battling older men in positions of power. You are not wrong about there being a void in the female enemies department of his rouges gallery. Females just don't naturally fit in the psychological underpinnings of the character.
How much cooler was Boba Fett before Episode II? How about the Force before the midichlorians? I think less is more with Yoda. Too much back story bogs down the real story. Forward. Create new myths. It's much harder, much more daring, and much healthier for the franchise.
I can see Fox releasing the original, original trilogy around the time of Episode VII to take advantage of the Disney advertising. That would be fine by me. Lucas saying he made the deal to protect legacy of his work makes complete sense.