Exquisite Mike.. Truly inspirational...
sniff sniff.. smells like.... sniff... Star Birth!
You just have to love the detail and contrast provided by line filters.. not to mention the freedom in processing and unlimited repro possibilities.. Have you considered doing a HSO redo? or a HOO/HOS? what about LRGB mapped as [Ha + 40% SII + 50% OIII]L [Ha]R [SII]G [OIII + 20% Ha]B
If doing HSO, adding Ha to the OIII for Blue gives you a bit more of a Hb look rather than a straight OIII look, which also give you a bit more strength in the blues (which is always nice)

and Lums for NB imaging should always be a blend of all 3 (or 4 or 5) narrowband channels, as if you use Ha as the lum, it will only really boost the Ha channel of the image, as they are identical.. you really want to boost all the channels various components, so the luminance (as in an LRGB image) should cover the full spectrum covered by the colour filters..
Wow.. Pretty sure most of that wasn't needed.. but hey, its the AM, I've not slept properly in a few days, and so now im babbling senselessly.. aaand I'm ok with that.
Anyway.... enough from me.