The questions seems to come out of a 21st century mindset--meaning, it seems parochial, of concern to a modern person (of a certain kind); and completely outside of the concerns of Scripture itself, or people of the Bible. The charge of "sexism" is something that assumes a modern or post-modern frame of reference, so we're demanding the ancient text supply an answer for a current bugbear.
Well, if we aren't going to challenge the hubris of the current "concern," but attempt to meet the person where he is (N.B. the neutral use of the masculine pronoun, because I frankly don't care... except for rules of proper grammar), the sign of circumcision applied to male members of the covenant people is an indicator that the Savior to come will be male. "Seed," is a masculine Heb. noun, and Eve seems to be the first person to assume her son (Cain) was the promised deliverer.
No matter who the Savior turned out to be, he would come into the world by means of a female of our species; not by falling out of the sky or a tree, or rising up out of the ground or the sea. Woman will not be bypassed in this operation. That, it seems to me, underscores the indispensability of the female half of our race to the divine plan.
Don't know if those are the kind of thoughts you're looking for.