So...
Decided to revisit Medea early this morning, while my client was still asleep. After what I learned yesterday, over about eight hours, I started from scratch and did this one in about one hour, not including rendering time.
With Volumetrics, lighting is a critical part of the process, even more than usual. Even very minor tweaks have a big impact. Here I used three of the new Spotlights, with the HDR set quite low.
Also below is the hemisphere I used instead of a cube.
I've used the word "Final" so many times lately, I decided this would be my final use of the word final, and finally reached the conclusion that, when all is said and done, we finally have to draw the final line and finally call it done!
"Finally"!
Bill G