Yeah, I'll echo consensus here. Breath Weapon is underpowered for 2 Refresh, you're making your player pay 4 Refresh for something not significantly better.
For reference, here's the Power Tedronai mentioned.
NATURAL WEAPONRY [-1]
Description: Your body contains or can produce some kind of weapon or attack.
Note: You have to pick one type of weapon (eg. fire breath, metal claws, three-foot tusks) when you take this power.
Skills Affected: Fists, Weapons, Guns, Discipline
Effects:
Natural Weaponry. Your body contains a weapon with a rating of 2. This weapon has a no range, is not capable of spray attacks, benefits from Strength powers, and is wielded with the Fists skill.
Potent Weaponry [-1]. Your natural weapon has a rating of 4.
Summoned Weaponry [-0]. You must take a supplemental action to create or draw your natural weapon before you can use it. In addition, you may wield your natural weapon with the Weapons skill.
Ranged Weaponry [-1]. Your natural weapon has a range of three zones and is capable of spray attacks. It may be wielded with the Fists, Weapons, Guns, or Discipline skill. It cannot be used with the defence trapping of Weapons unless you possess the Summoned Weaponry upgrade.
Area Weaponry [-1]. Your natural weapon may be used to make zonewide attacks.
Selective Weaponry [-1]. (Requires Area Weaponry) You do not harm yourself when making a zonewide attack against your own zone with your natural weapon.
Explosive Weaponry [+1]. (Requires Area Weaponry) Your natural weapon may not be used to make attacks that are not zone-wide.
Imprecise Weaponry [+1] (Requires Selective Weaponry) You suffer a -2 penalty to the accuracy of any zonewide attack that you make with your natural weapon.