The differences between leadership styles are not necessarily positive or negative in building leadership, but executives need to be aware of their style and how they come across to others in their organization and outside.
A year ago I went to a wedding where the bridesmaids wore identical dresses and the maid of honor wore a dress that was longer and a different style and color. For that wedding, the bride only chose the dresses for her bridesmaids and allowed the maid of honor to pick out her own dress.
If it matters to you aesthetically, you may very well want to line people up by height. But the idea of lining up your attendants in order of importance -- the maid of honor (perhaps your sister) closest to you, then your best friend, then your cousin, and then your other two close friends -- makes sense too.