At this point, I'm not super clear on how this movie stands in relation to the musical. Jay-Z is working on the score- does that not imply that they are jettisoning or highly modifying it? They're renaming Warbucks, does that not imply they are drastically reshaping the material?
And if we're going to be so defensive of the sanctity of the source material- don't forget that the Annie musical is a pretty big about-face from the original comic strip, which was not shy in its conservatism. Harold Gray even briefly killed off Daddy Warbucks following the New Deal, citing a belief that Warbucks couldn't exist in a world in which the New Deal was enacted. Harold Gray also was pro-child labor- a "hard-knock life" was probably not a bad thing in his eyes.
God knows what he'd think if he knew they were making an all-black equivalent!
"...everyone finally shut up, and the audience could enjoy the beginning of the Anatevka Pogram in peace."