Service means you as the superior recognize everyone has an inherent moral and rational free will with which they make their own decisions. Your primary role is to serve as an advisor, like how the president is the ultimate decision maker, but surrounded by a company of experts. Or, serve as a keeper of peace and safety, protecting the average citizen from evil doers through enforcing the just law that applies to all equally, including the law enforcers.
Both of the above are very different than the benevolent ubermensch you describe, which assumes those of lesser abilities are inferior beings, like pets, which can be coddled and provide entertainment, but ultimately are lower down on the totem pole, like a Rick and Morty dynamic. What you describe is Aristotle's concept: that some humans are inherently the tools of superior humans. The Christian concept flips that on its head: the more talented humans should voluntarily serve as tools for the less capable.
On a practical ground, this is the optimal social structure on pragmatic grounds. If the Christian Imago Dei concept is correct, then all human beings have an inherent information creation capability possessed by nothing else in the world. Information creation is what powers the prosperity of a society, and thus the most prosperous society is the one that maximizes the ability of all to create information, as opposed to just optimizing things for a small elite.
Both of the above are very different than the benevolent ubermensch you describe, which assumes those of lesser abilities are inferior beings, like pets, which can be coddled and provide entertainment, but ultimately are lower down on the totem pole, like a Rick and Morty dynamic. What you describe is Aristotle's concept: that some humans are inherently the tools of superior humans. The Christian concept flips that on its head: the more talented humans should voluntarily serve as tools for the less capable.
On a practical ground, this is the optimal social structure on pragmatic grounds. If the Christian Imago Dei concept is correct, then all human beings have an inherent information creation capability possessed by nothing else in the world. Information creation is what powers the prosperity of a society, and thus the most prosperous society is the one that maximizes the ability of all to create information, as opposed to just optimizing things for a small elite.