Surely the most sensible approach is that of minimising the cognitive weight afforded to gender differences during the formative years so that eventually we have pretty much everywhere a generation that responds to different genders in the same muted, egalitarian manner typical of Scandinavian societies and so forth? Let's stop worrying about gender and ensuring that our kids grow up in a context in which gender is not a major predictive variable of anything, so that their brains learn to ignore it.