Great job!!
You managed to elevate the idea in a way that i don't think I would've thought to do. I was locked into the idea of trying to make a dirty, wobbly, VHS-like John Carpenter thing. Even with just those two tracks (Percussion & High-passed bass), things were starting to get a bit unwieldly...effects-wise.
Anyway, by the time I'd have added more layers, it would've sounded way too messy. You managed to open the sound aperture without losing the dark foundation. And your chord palette was much more interesting than the one I'd got locked into.
If it turns out that the battery change and temperature maintenance cures the crashing problems then I might actually return to the original idea, and see where it leads, using your expansion as inspiration.
Thanks for the unplanned collaboration