Now here is WASasquatch/Dune card setup. Scale changed, did fine.
I made some sparks flying about as if a new log was just added or the wind maybe stirring things up.
I took the Flame Card Flame Density Fractal and in Colour tab, Colour Offset is -0.775
Same fractal reduced scale to 0.025 and 0.025 in minimum also.
This takes you from a nearly solid vornoi noise preview to a sparse one.
I hear you about your goal WASasquatch, somewhere I have seen a tapered SSS sort of like a trapezoid, maybe for a rocket plume or waterfall, memory eludes me just now. I will look through cloud stuff.
I want to see if bloom or burst would do something "cute" on this now. Maybe a little smoke.....we'll see.