I think the fans could help Nintendo to fix those errors by writing more feedbacks to Nintendo and branches of Nintendo to demands more diversity and genders as main characters and also keep nagging them on social media. They will eventually slowly adapt and keep those requests in their minds, as it evidently worked with Animal Crossing, Splatoon and Ring Con Main characters. Just don't give up on your goals until they eventually recognize their errors and probably adds more diversity through main protagonists then future Smash Bros could induce them in their roster.
I myself would love to see more diverse characters in Smash Bros but I kept getting choked when I look at main protagonists only; so their best chances to have PoC in the roster is Skyward Swords Impa, Ring Con Trainer, Urbosa, double inclusion of Spring Man and Twintelle, and Elma.
Would love to see Urbosa getting in tho since her design is pretty awesome.
I myself would love to see more diverse characters in Smash Bros but I kept getting choked when I look at main protagonists only; so their best chances to have PoC in the roster is Skyward Swords Impa, Ring Con Trainer, Urbosa, double inclusion of Spring Man and Twintelle, and Elma.
Would love to see Urbosa getting in tho since her design is pretty awesome.