This game deserves to be seen so much more than it has been so far. I've really been hoping for a Fez-ish take on spin.
The environmental mechanics for your first fight were the perfect pacing to feel frantic but still manageable. I was excited to see a council-type fight second, but was a little bummed when I realized that they could all be fought independently without much consideration for other bosses that were present.
I liked the flash on the health bar to signify that damage was being dealt, but a clearer audio cue or some visual feedback to let me know that I successfully hit the boss would have been nice.
I would have happily kept going after the trio fight, but I couldn't read what your signpost said so I decided to move on.
Overall, a really fun approach to spin and spatial boss fights in general!