Diversity and options to explore widely different concepts is fun in and of itself. It cannot be measured in popularity or as some market survey because it is fundamental to the creative process of character creation, even to those who ultimately choose something traditional. The existence of variety around your character provides the sense of your character being someone unique.
The formula isn't to simply fill every space with something that satisfies the majority, because in doing so you destroy the illusion of things being unique and special and the entire storytelling you are trying to get people to engage with.
