The most interesting line for me occurs in the second vignette, where Nightmare Moon admits that

In your presence, you take away my part in the love of my subjects. In your absence, you take away our lives!

Though it's not her need for happiness which gets me, but the recognition that she and the others can't live without the sun. There is simpatico in the pronoun 'our' which points to maturation--something like 'forced motherhood'--that might be a surprising side of her character, if it were explored further in a longer format.

I also thought the pacing was done very well here; it has an even, rounded quality to it.