Will,
nice twisty composition. Unusual progression and lots of cool sounds.
Initially the large brass (Tuba?)came in, I thought that is a sound of departing ship smile I think it would interesting to find departing ship sound and put it in unison with large brass you are using to finish the tune (very end)
I am not strong on mixing at all, but to my ear, I would lower hats and bring guitar more forward slightly.

Thank you for sharing!

Misha.