OK, I had a quiet afternoon, so ran the entire thing through PI again. I then took the output to PS and simply did a Soft Light overlay and a slight star colour tweak.
So, this is essentially the NON-stretched or manipulated "virgin" image, centre cropped (Full size).
Maybe another 7 to 10 hours...possibly not this season unless I move imaging position.
https://www.astrobin.com/343728/