It is more that I did not include it. To me, the immolator is missing a lot of "story" in its kit. Basically, a playbook should give an indication of what kind of story you want to play out (a little hard with the DnD baggage for DW). And all the Immolator really was about, was fire and burning things. Nothing about what it meant to "be an immolator" or what kind of story they tried to tell.
But it is something I want to try and look into.