For most women it's very difficult to play a strong female lead character in a movie or TV series. This is why many Directors and Producer will tell you it's very risky to make the lead character a woman. Elizabeth Mitchell can add her name to a very short list of women who have pulled this off (Sigourney Weaver in Alien Saga and Kate Mulgrew in Star Trek Voyager). Elizabeth Mitchell plays her strong female lead role very well and her acting is top notch. I think the show will as at least a couple more years because of this.