I'm calling now an Increased amount of "LF Hellfire and Blockhead" topics when Kreig is released.
Depends. I'll probs do a fire elemental gun with an added effect, unlike hellfire, where the added effect derives from its elemental damage. Maybe a fire Butcher; may go well with his mag increasing skills.
Hellfire is great since it gets 50% bonus splash damage like a plasma caster and only consumes one ammo.
Actually, the thing which makes the Hellfire so distinct is the proc stacking. So rather than refreshing the damage-over-time effect (as other weapons do), the Hellfire is stacking them... so each time they catch fire, they get take even more burn damage. And if you use a +elemental effect skill or item, it makes it even more likely.
Also, the elemental damage is as much, and often more, than the bullet damage.
 my bad, the Teapot doesn't stack corrosive, it just has a chance to spread.