I like your ideas, Jared, but want to point out that the purpose you have for your revised Firebrand was the modus operandi for the original Firebrand, Gary Gilbert, who was a son of an wealthy man who turned into an anarchist.
The thing with Gilbert is that his destruction was always intended to serve a purpose, namely burning down the old capitalist order and replacing it with a new anarchist/socialist one. I want to see the Firebrand suit worn by the Marvel answer to DC's Firefly, a sick bastard who quite literally wants to watch the world burn.
He could be a psycho for hire, a complete psychopath, or whatever. It's just that fire can be extremely destructive, and I think that any future Firebrand can and should use his or her powers for exactly those reasons.