I actually wrote a song around 3 years about fairies using a similar progression. I really enjoy these chromatic type progressions where the bass note just falls down chromatically for the first few chords.
Similar to what Troisnyx said, these chords really can sometimes show how the composer approaches with note choosing. With the melody too, I also feel like you could top off with not just some original sound for the melody but more of a heavy/medium vibrato synth playing on top.
0:18 I would of carried on that progressive change since I thought you was starting to go with the typical circle of 4ths back to the original but that is just what I would of done haha. Just a few more details here and there and you could remove the fact that you say 'simple' although the concept will be.