This is perhaps one of Shakespeare's more interesting plays, if you will. In comparison to Macbeth it isn't quite the walk in the park.
I think conceptually it enables the reader to see that characters can influence characters to such a degree that the original traits are masked and changed. Tragedy in this play is definitely a main component - and a great emphasis that perhaps the villain doesn't always find their true defeat. In a way, wasn't the "villain" successful? He lied to everyone and pretty much killed whomever got in his way.
There are times when Fassbinder uses deliberately mannered visuals to make a point. He often separates Emmi and Ali from the rest of society with alternating long shots: First they are distant, then those who watch them are distant. He crowds them into close two-shots in claustrophobic little rooms. He makes use of the Moroccan’s natural stiffness before the camera. When Emmi comes into the bar toward the end and requests “that gypsy song” she and Ali first danced to, the song acts as Ali’s cue, and he stands, walks toward her and asks her to dance as if he were a robot triggered by the song. Would it be better if he were more natural? No, because Fassbinder’s style throughout the movie is one in which movements and decisions are dictated to his characters by the world they live in.