I definitely went with a more generative ambient musical style as opposed to something with strong harmonic progression. One thing is I didn't totally exploit my custom adaptive system, one of the things I didn't have time to do was create more than one set of pitch and rhythm patterns for each of the musical entities in the scene, so as you observed, the music in each area is pretty static despite the tempo and scale changes.
As for what you missed, it's a little obtuse, but there is an ending sequence if you jump off the edge into the chasm.
Thanks for the feedback!