That's a very intersting experiment, making solo, elite, and regular version of the same guy.
I agree that the firebomb seems a bit out of place. He doesn't even really have a hand to throw 'em with, busy as they are swinging that chain around (although I can see a cinematic moment where he lets go one of his hands to grab a clay-pot firebomb, tosses it forward and grabs the chain again, shooting it out to smash the clay pot himself while it flies inbetween two targets...
I think you could add the aura, but he'd need a little something else as well. Howabout a picador-esque ability to wrap his chain and slide a target around? I guess that would work better as a pull and he'd rather keep them away then move them up...
Food for thought
Fitz