Willow Fire FX

[-Variant]

Currently Willow has the unique and very nice perk of having extra fire fuel efficiency, and whilst not entirely needed, I think a neat little FX showing that the perk is in action would be nice. 
Some small sparks and embers flying up from the fire would be a cute little indication that the perk is currently at play, AND would give Willow's fires just a little more crispy warmness! Exactly what she would've wanted.

[ImpalerWrG]

Interesting idea, but remaining fuel in a fire is indicated by the size of the flames, Willows fuel efficiency is applied immediatly and just results in a added fuel item being worth more and growing the fire more vs what the same fuel add by another player would give.  The Fire itself has no memory of who put fuel in it and it's redundant because the size alone idicates the durration.

That said I love the graphic you've provided, so an alternative usage for it might be whenever Willow is near a fireplace and is reciving a sanity buff from it this krackle animation could play as a visible indicator of that sanity gain.