The paintings may communicate even better because people are lazy and they can look at a painting with less effort than they can read a poem.
The humor is essentially dark for a cartoon and sophisticated. But at the same time, being a cartoon gives the writers more freedom than in a normal sitcom. It always pushes the line that, despite human failings, the Simpsons are really decent people.
I was able to do The Saint of Fort Washington, on the relationship between two homeless men.

