let the convicted arsonist be the front-line guy permanently assigned to fire duty in every single wildfire, until one of the fires gets him.
Too easy for a firebug to cause other deaths and destruction in that job.
But life imprisonment no possibility of parole works for me.
Generally, causing a death during the commission of another crime/felony gets classified as murder, doesnt it? Which definitely covers death by arson.
BTW, they got someone they think is the guy.