New day. Poured through the ending again with fresh ears. The whole thing got repetitive quickly. The melody itself is a phrase repeating several times and there is only so much one can do with that harmonically, especially since the melody basically outlines two or three chords. I alleviated the monotony by changing up the chord inversions and voicing of the harmony. Putting different notes of the chord in the base or top alters the feeling of the harmony even though the notes are essentially the same. I also introduced an extra borrowed chord for flavor.
To round off, the melody fades and the effect of the whole is a drifting away. Perfect for a gaseous element that isn't sociable.