Women working based at home can have a huge capacity to do international business.
I think this is part of the problem - many of us still don't think of stay at home parents by default, but stay at home mums. We need to see flexible working as something which benefits everyone, not just parents - after all, we all have lives outside work. Obviously not all types of job can have the same flexibility as others - you can't decide not to teach year 9 French a bit later just because you had to take the car in for its MOT, for example. But for many jobs, technology means it is possible to work from home and do some of the work at times which don't fit into 9-5. Meeting face to face is good - but there's also email, instant messaging, document sharing, screen sharing when necessary, telephones, video conferencing... It doesn't have to be desk-based 9-5. But unfortunately, until more men start working more flexibly, it's going to be seen as that thing mums do while they're not really on a proper career path.
I also think we need mandatory equal pay audits, and more objective ways of measuring performance. I know that's not always easy - some things can't just be broken down easily into measurable numbers. But there are things which can be looked at - why are female academics having to publish more papers than male academics to be seen as equivalent? (I have some issues with the way academia sometimes seems to be all about numbers of published papers, rather than looking at the quality, or whatever work is being done. But while it is - well, that is something which is measurable.)
This is all something I feel quite strongly about at the moment - they've issued tables of technical competencies, and what you should be able to achieve at particular levels. It's far from perfect, but I think it is a good starting place, and if they ranked everyone against it, I think they would see that not everyone is equal, and some people are better than management think, while others don't deserve the reputation they have, when you break it down. Some people probably are in about the right place, but a lot aren't, and a lot of it is dependent on the manager's opinion, and it's currently too subjective - I suspect many places are like this.
I think also, there needs to be much more awareness of issues like unconscious bias, because while it's difficult to counter unconscious things, the starting place has to be awareness that it does play a part.