Not taking a strong position on this right now, but in defense of JW stated doctrine, they believe that it's the MAN who gives "life" and thus it was Adam's sperm that would have created perfection and life even with Eve's whatever.
Of course, since we're speculating about fantasy here....
1. Adam did have another rib.
2. Eve could have lived on for 900 years and produced as many children as she needed to which would have carried Adam's perfection. That would have been nice since then God would have just killed two people. Satan and Eve.
But here's another question along this line. What about the NEPHILIM? ooooooooooo!!! These are perfect fathers and imperfect mothers. Would they have lived forever or up until 900 years (presuming you need the magic in the tree of life to live beyond 999 years? (one "day")?
Per JW doctrine those children would have been perfect and thus lived up to one day, at least, or perhaps until they were killed. It still amazes me how a materialize angel could impregnate a human,meaning these children would be the children of angels. Apparently they had superior powers, either physically and/or mentally since they became the "men of fame". Famous for what? I do believe the Greek myths are about this too, based upon the stories they heard from Noah. I guess that aspect of godly men appealed to the Greeks more.
Oh, well, so much for myths.....or reality....