The altruist appreciates the different types and the egoist appreciates the universal element in people.
There's no better description of the egoist's perspective on the communist future than Reich:
You'll have a good, secure life when being alive means more to you than security, love more than money, your freedom more than public or partisan opinion; when the mood of Beethoven's or Bach's music becomes the mood of your whole life--you have it in you, little man, somewhere deep down in a corner of your being; when your thinking is in harmony, and no longer in conflict, with your feelings; when you've learned to recognize two things in their season: your gifts and the onset of old age; when you let yourself be guided by the thoughts of great sages and no longer by the crimes of great warriors: when you cease to set more store by a marriage certificate than by love between man and woman; when you learn to recognize your errors promptly and not too late, as you do today; when you pay the men and women who teach your children better than politicians; when truths inspire you and empty formulas repel you; when you communicate with your fellow workers in foreign countries directly, and no longer through diplomats; when instead of enraging you as it does today, your adolescents daughter's happiness in love makes your heart swell with joy; when you can only shake your head at the memory joy; when you can only shake your head at the memory of the days when small children were punished for touching their sex organs; when the human faces you see on the street are no longer drawn with grief and misery but glow with freedom, vitality, and serenity; when human bodies cease to walk this earth with rigid, retracted pelvises and frozen sex organs.
Listen Little Man, Reich