The positive result, according to N, would be each superman reaching their full potential, unencumbered by any universal morality or judgments of how one ought to live one's life. Given that each superman is following their own self-created values, which would also extend to the activities/goals they focus on, each one would end up behaving, creating and doing in different ways. But, presumably, all of them would be filled with life energy, focus and passion and thus able to perform at high levels.
- Morality places limits on actions and attitudes. They are not limited by this.
- Lacking amor fati, a person is more likely to hesitate, back away from living fully and life's possibilities. The superman has amor fati.
- The idea of the eternal return is a motivator - make your life such that it is not horrible if that life repeated forever - but also a counter to nihilism. Yes, what you do is important since it will always be a facet of reality. The superman has this motivation and is not inhibited by nihilism.
So, everything is either motivating greatness or removing blocks to being great. So, being great and doing great things (whatever that means in each individual case) is the positive result. (supposedly) But each Ubermensch would have their own values and greatness.