Indiana, it might be worth it to check out
MEN OF RESPECT, a contemporary mob refashioning of the play from 1991 starring John Turturro. It's nowhere near as surreal as Wright's, but it does an admirable job of conveying the shifting morals of Macbeth and the shrill instigation of his wife. Plus it's got a lot of those great goomba mob film faces. It's even got a substantial WikiPedia page!
And if you're a fan of McKellen and Loncraine's RICHARD III, you should seek out McKellen's annotated screenplay. In a publishing world overloaded with script books, this one truly shines. He goes into incredible detail about the excitement and difficulties of not only adapting Shakespeare for film, but the effort of transposing setting elements and
not losing the soul of the play