I think they should go Hispanic with this.
Not Black, as there's a few other Black Heroes-for-Hire type characters.
Not Asian, for what's said in the article, and because that could mean no Shang-Chi. Plus, if they were going to go this route, Daniel Wu would've been perfect, but he's already doing a similar show in Into the Badlands.
Not a Caucasian, because the MCU is like 90% white.
We don't have any Hispanic/Latino heroes on the big, or small, screen, so Marvel could get the jump on that since they've literally missed every other boat. Hell, he could be half Hispanic/Latino, and half Asian!