There was nothing requiring Jesus to be born of a woman at all. God fashioned Adam out of dust. He could have done the same with His Son. Because something isn't "required", doesn't mean that God didn't will it so anyway. Heck, if you want to really get down to brass tacks, God could have simply willed to redeem the world absent of the cross, but that wasn't His plan, and we're not qualified to question why he chose that path.
"Heck, if you want to really get down to brass tacks, God could have simply willed to redeem the world absent of the cross, but that wasn't His plan,"
Absolutely correct!
God is God.
He could have just forgiven Adam and Eve, erased the stain of sin from them, and let everything go on.
He didn't need to set up sacrifices or require atonement.
He didn't need to require that sin be repaid by sacrifice, and original sin be repaid by the horrible bloody sacrifice of his Only Begotten Son.
God is God. He can go whatever He wants.
He wanted to do it the way He did it.
So he did.
Maybe you or I or McGee think we'd have done it differently, if we were God.
But we're not, and He is,
and that's that.