xmen only had jean and rogue? what about storm? sure, im a bigger fan of her rocker look, but she still looks great, same with jubilee. add to that psylock who was a bombshell back then, mystique and pretty much any comic chick you want and you have a solid cast on par with the DCAU.
even the story can be setup easily, like someone comes back in time and try to corrupt the female cast, in order to setup a victory in the future, someone like mister sinister or even apocalypse. or, if you want something diferent, make a new character sent by cable, because of his power(something like, he is one of the few capable of surviving an alien virus that will destroy humanity), so he is sent to impregnate the female cast so they can give birth to a next gen xmen capable of surviving.
the potential is there.