After some experimentation I have noticed that my de-noising technique needed to be adjusted, as it used to very effectively dissolve fainter details. I really like how TGVDenoise works in PixInsight, so from now on this will my tool for controlling noise, and I will be applying it very moderately...
Revised Dragons look noisier, but there is also more wealth of fainter detail, so I like it
http://www.astrobin.com/full/189183/C/
Thank you for looking
S.