I am under-qualified for that one. My best guess would be technology increasing fertility up to 60 or if anything goes in a utopia, to infinity - have a career, then get bored of it and still have time to have kids. Not have to race against the calendar, be able to make these choices at any point in your life basically.

Aside this, and aside complete equality and the lack of gender roles or institutional barrier, I cannot think of anything, because I am a straight man and because I think civilized life is more female-compatible anyhow, even today, even with those barriers and prejudices, because male dreams are often about violence and war and adventure and danger, and female dreams are more of a peaceful, career, politics, art and self-expression, travel, discovery, kids type, and those are easier to satisfy even today. Of course there are many outliers in both genders, this is only a very, very rough heuristic only.