MY POV is this:

**Firstly, IF everything in a Bryce scene, is imported into Bryce, be it a 2d.lst tube,  or Obp's, it's a Bryce scene, especially if the ONLY PW is for signature, as the majority of my work is!
**

Secondly, as an contributing artist here, IMHO, the mark of a truly good artist & art,  is knowing "when  to let go," there is such a state of obsessive tweak-tweak-tweaking; it actually spills over into other life activities in diverse forms,  "power-tripping" being a prominent example. 

But what do I know?  I'm just a 60 year old retired Behavioral Psychologist who dabbles in 3D art mediums.