Not at all naive. Asians used to face prejudice arguably as severe as that faced by blacks. Once discriminatory laws were lifted, they began a remarkable ascendancy--one that was in large part [1] due to the market re-pricing the value of Asian labor: " One explanation for rapid Asian upward mobility is, therefore, that earnings gaps driven by prejudice rather than productivity could not persist in a post-war labor market that eliminated most forms of legal discrimination against non-white workers"

[1] http://www.nber.org/papers/w22748

This is exactly the problem. You think in terms of "balancing a seesaw", but there is no reason to believe that in the complete absence of discrimination, the gender ratio will be 50:50.

There's no need for arbitrary "balance". Let people do what they want, and make the process as fair as possible.

Anything else is just enforcing some ideaology or another.

Equality of opportunity vs equality of outcome.