I've looked at this several times since you posted it Greg and I have to say it's a pleasure seeing something different and something that's difficult to image. So on that score alone, well done!
I actually prefer your
original processing. It's quite compelling and I particularly like the structure visible in the fainter extents.
I'll be honest though and say that the reprocessed version seems to have obliterated the structure in those fainter extents. Colours notwithstanding, the reprocessed version would benefit greatly if you could restore that structural detail.
Cheers, Marcus