Oh my goodness this is absolutely wonderful and I love it. The colours seem really thematic, I really appreciate how much detail you're going into explaining your process and thoughts on how the piece has evolved.
The only thing I can think to say is that the hand positioning in the colour preview makes the character almost seem passive, which maybe for an "active superpower" isn't ideal, but then you have the orbs providing the motion plus you're clearly experimenting with hand positions anyway.
Not really got much to contribute other than a lot of enthusiasm for where you're going, this is awesome.