Q "Do you think things could have worked out better if Adam had slayed Eve when he witnessed her in the act of disobeying God?"
Impossible, because at that point Adam had not eaten from the tree of the knowledge of good and evil, he therefore did not have any concept of good or evil and could not have seen disobedience as good or evil. The same, of course, applied to Eve. That is why they both readily disobeyed. Only AFTER eating from the tree of the knowledge of good and evil did they get to know the concept of good and evil. That is when they saw disobedience as evil, and it is only then that they started covering their privates because it is only then that they saw walking around with one's privates in full view was also evil