Well, I have no idea how the thread ended up talking about mitochondria, but I'm gonna try and answer the original question.
Needless to say, gender roles are culturally-bound, relative, etc. Various disclaimers about how my views are not indicative or representative of the majority's views, or reality.
I'm a guy who likes guys. Femininity doesn't hold much appeal for me, on basically any level. Moreover, femininity, as a concept, seems to be fairly consistently built around the aesthetics that men find attractive on women, not what women actually want to look like - a completely spurious claim that I can't really back up, aside from the fact that traditional femininity has existed basically since the days of Ur, and women had very little ability to influence it (or any other aspect of culture, really) for most of the intervening time.
Aesthetically speaking, since I'm not sure how else you could deal with gender roles, I argue it would be a fundamentally good idea - but obviously a totally impossible one - to abolish femininity as a concept, because if nothing else, many peoples' personal ideas of femininity seem to include aspects of oppression of women's sociopolitical freedom (the whole "stay in the kitchen" is an extreme and oft-parodied example, but you can't deny that a lot of people still view politics, engineering, and business as "improper" careers for a womanly woman).
I can feel the Benadryl starting to kick in, so no guarantees the rest of this will make sense, but:
How implausible would it be to enforce masculinity as the appealing aesthetic on both biological genders? Obviously, for people currently attracted to women/femininity, this is probably kind of undesirable, but the internet has already shown its infatuation with capital-A Awesome, best exemplified in a
certain shirtless Australian businessman. What if we just simplified everything and made Awesome - which is practically synonymous with a lot of people's ideas of "manliness" - the platonic ideal of sexiness?