It really is a weird phenomenon, since I barely play any multi-player FPS's I hadn't heard about this issue. Still not putting any women is stupid in games that are supposed to have massive appeal or are in the future is plain lazy.
Yet I can think of a FPS that needs no female characters and that is Team Fortress 2, a game which still plenty of women play and has tons of yaoi for some reason. It would interesting to release a Team Fortress 2 esque FPS with only women in it and see how it goes.
Come on Jim, you shouldn't have thanked God this time, thank Mother Gea, when dressing a feminist womyn, you don't need to thank a phallocentric Male God, thank a female one, for Gea's sake.