I've made huge improvements to the fire particles.
The residual flames from the flamer still look odd because of the black decal below it.
Something I want to do is to have a custom decal for fire.
The first 16 frames are a loop, the second 16 frames the fade out animation at the end of the lifetime.
I don't know if this is possible without code support?
a black frame crept into the preview render, just ignore it
Anyway, here's the image sequence: