I remember when the "Spawn" movie came out, and Spawn's buddy, a black dude in the comic, was played by a white man in the movie because the studio didn't want two black male leads, afraid that would make it a niche movie.
Consequently the movie presented an interracial marriage, which I have no problem with, but it seems odd that if they're afraid of racist people not seeing a movie with two black actors, an interracial marriage is ok.
And I think Lando would have made a great Two-Face, regardless of race.