An extremely good and practical suggestion, pretty much the same idea that Geena Davies has for increasing the numbers of roles for women on film and tv.
Quote from http://www.theguardian.com/film/2015/sep/27/geena-davis-institute-sixism-in-film-industry
Davis is not a fan of quotas for the creative industries but she says one of the easiest ways to make an impact is to smash the psychological barrier of 17% on screen and to start doing that now.
“The one area where we could reach parity overnight is on screen, absolutely overnight… My two-pronged solution to the entire problem is just before you cast a film or a TV show, go through the characters and change a bunch of first names to female – hooray! Now you’ve got a gender-balanced cast, you’ve got female characters who are un-stereotyped because they were written actually for a man and then, wherever it says, ‘a crowd gathers’, put ‘which is half female’. And that’ll happen.”
Her suggestion is a valid one: the more representations there are of women doing interesting or unexpected or powerful things, the more we become culturally acclimatised.
“I really think if we change what kids see from the beginning, it will change how they grow up,” Davis says. “You know, we’re creating problems that we have to solve later… If we show them that women take up half the space and boys and girls share the sandbox equally from the beginning, it will change everything.”
It's worth remembering here that the character of Ripley in Alien was originally written as a male, all it took was making the character female and having an excellent, albeit unknown at the time, actor play her to create the enduring icon that is Ellen Ripley. Ground breaking and immensely influential.