When I listened to Gaudi a couple days ago, I also noticed a few small things about "Closer to Heaven." The first line starts with "Rising and falling..." and the melody reflects these opposites: "rising" ascends (B C), and "falling" descends, sung with a melisma that emphasizes this (A G G).
When I made a note of this to myself, I remembered that sometime last year (I neglected to write down the specific date), I noticed that "heaven" in the recurring line "Closer to heaven than you and me" is sung to the highest note in that phrase (G), which musically indicates the height of heaven (although the "and" is also sung to a G note).
