SJW movement is out of control. We cant and should not rewrite history, nor destroy beloved old characters.
However, I would love a Black, or Hispanic, or Asian etc character in any companies marque franchises, however just make them a additional character or new character. No need to destroy past story cannons, just add to the story. (If it matters I'm Hispanic and don't know why we would replace beloved old characters...)
Just IMHO
It's an alternate take on the character. You'll find that for many characters, them being "white", or "male" isn't a defining aspect of their character. Like in my previous post, take Hermione Granger from the Harry Potter series. J.K Rowling didn't even specify her as white in the books, (though of course that's what our minds default to, due to that being the norm in the majority of media) and we've got two portrayals of her - Emma Watson portraying a white Hermione in the films, and Noma Dumezweni portraying a black Hermione in the theatre. Both interpretations are equally as valid, as Hermione's skin colour isn't a defining part of her character. While if Hermione was portrayed as having below average intelligence, and barely trying at school, it wouldn't really be a faithful portrayal - as Hermione's intelligence and work ethics are key parts of her character.
If you open you mind to being able to change non-core aspects of a character, you'll find that there're many ways of approaching the character - which can actually enrich them, as we get to see them in action in different scenarios, hence play with their core aspects in a variety of different ways - and variety is the spice of life.
Being female is a core part of Samus' character, in a male dominating gaming industry. Being white, isn't. So we can freely create a black Samus, without worrying about changing what makes her Samus. As well as variety itself being interesting and desirable, a black Samus would mean greater representation for black people - and while its not as good as a black character created from the ground up - there's no reason why we can't have both.