"I too love that stanza, Adam, and often quote it to show that Hammerstein could rhyme cleverly with the best of them. He CHOSE not to do so in songs like "This Nearly Was Mine". "
Yes, Hammerstein had lots of wit, shown both in his lyrics and in his book scenes. And i think it is to his great credit that he didn't always go for the clever rhymes but often went for the well-written and emotionally powerful lyrics in many songs that fill you with emotion, especially when paired with the soaring melodies. For me, Sondheim has the largest number of lyrics that make me notice the fun rhymes and greatly appreciate the wit, but Hammerstein writes the shows that affect me the most emotionally, and Oscar's lyrics are still my favourites, so many years later.
Another Sondheim rhyme:
Agony, far more painful than yours
When you know she would go with you, if there only were doors