As to the first question, how many people would have to be hired and how much would it cost, I really don't know the answer, but it is not surprising that there is a tremendous amount of research already in existence in Canada on a whole range of issues.
Take, for example, defence spending. Some people would say women account for 51% of the population, so they get 51% of the benefit of defence spending. That is one way of looking at it. Another way to look at it is to start examining how many women receive salaries, employment benefits, specific training opportunities, and so on, as the result of military spending, how many women receive after-service care that is available to military, and how is public and social support distributed through various organizations on bases distributed between women and men. Those are the kinds of questions that would start breaking down how the spending side affects people by gender. It will cost some money to do it; however, if the UN, the IMF, and the World Bank are correct in saying that the GDP will grow faster when both women and men are working in their most economically productive fashion, then I think the long-term economic gains would outweigh the costs.
I agree with you completely on the diversity aspect of your question, but what has been shown is that until gender analysis is in place, it's very difficult to begin making sense of other diversity characteristics as well, because whether you do an analysis of impact by race, by disability, by sexual orientation, by age—pick any demographic characteristic you want—women are always in second place. So you need a gender analysis. You can either do a global gender analysis to get started and then start looking at additional characteristics, which will always enrich your analysis and help further target effective government policy, or you can do the breakdown by other characteristics and then gather all the gender data together at the end.
I think going after gender first, because it's one of the most fundamental human divisions, male and female—perhaps far too important—is the place to start. Who determines what is a benefit and what is a detriment? I think we need to listen to people talk about that.