I changed some parameters, the colormapping and added another dynamic filter mask for the brightness. That causes more tips of the flames break free from the base.
Not really sure if I´m coming closer to a good illusion or not.
I mean while perceiving the most interesting part happens behind the eyes not in front of them. I´ll leave it for now and maybe come back to it one day.
Some insights which might sound trivial to some of you but hopefully inspire some others.
An LED animation needs basically 3 steps:
A) Generating the raw data. Pseudorandom changes tend to look more interesting than periodic repetetive ones.
B) Creating a colormapping that brings out the interesting details.
C) Postprocessing the result like filtering to get rid of artifacts and make the appearing more pleasant.