One of the responses I’ve seen a lot to black women requesting a black woman in Overwatch, especially in response to the fact that there are six white women in the game is “but even the white women are diverse, they’re all from different countries!” and yeah, they are, but like, they’re all from Europe. They’re from England, Ireland, Sweden, Switzerland, France, and Russia respectively. And each of these countries has their own vibrant culture, but I’m curious why you don’t assign that level of diversity to Africa. An African hero from Tunisia or Morocco would be completely different from an African hero from South Africa which would be completely different from an Ethiopian hero, and all of these would be different from Numbani. Even outside of Africa, you could make a black woman hero from Georgia or Ecuador or Montreal or Haiti and they would be completely different.
You could add six black woman heroes and have them be more diverse than the six existing white women, but only if you stop viewing black people as a monolith.