Why is it the only critical death animation missing from the game? I see gms doing it all the time so its obviously possible, dancing flaming death is the best.
Flamer buff plus some new animations for it?
Sure, why not.
As the OP was mentioning about animation only, thread is shamelessly closed with "implemented" note and another, "wait for update", somewhere near.
About animation itself, it was kind of bugged at the time of changes in animations handling and forgotten later - if anything
unexpected will happen,
you know what to do... Best is to check with character who have Bloody Mess in traits, not all criticals will play wanted animation (but chance is high enough to make it visible from time to time).