Well, you have an interesting "take" on the commandment since the who premise of the revelation was this quote
"Verily, thus saith the Lord unto you my servant Joseph, that inasmuch as you have inquired of my hand to know and understand wherein I, the Lord, justified my servants Abraham, Isaac, and Jacob, as also Moses, David and Solomon, my servants, as touching the principle and doctrine of their having many wives and concubines—"
The commandment was given BECAUSE Joseph inquired of God ABOUT POLYGAMY not marriage for eternity. But you view it through the eyes of the new and improved socially acceptable Mormon doctrine I suppose.
Q: Why is it that men can have more than one wife in eternity, yet women will have only one man?
Answer: Because the Church still teaches and approves of polygamy in the afterlife.
Q: Why??
Answer: Because it is an eternal commandment, and the only reason it is NOT practiced at this time here on earth is because it is against the law.
Yes, that's true. But that still doesn't change the words. Just because the revelation was given in response to that question, and that it deals with plural marriage, it does not make that practice the "new and everlasting" part of the scripture. Look at the sentence again. The phrase "new and everlasting" modifies the noun "covenant". It's the covenant that is "new and everlasting", not the practice of plural marriage.
Those plural marriage covenants will be eternal, just as any other valid marriage for time and all eternity.
That section of the Doctrine and Covenants still doesn't say that the practice of plural marriage would be "new and everlasting", no matter how you spin it.