I don't feel qualified to comment on the balance of 60-refresh powers, I'm afraid.
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
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.
Integrated Weaponry [-1]. You may use your Weapons skill to attack, defend, maneuver, and block unarmed or with your natural weapon.
Ranged Weaponry [-1]. Your natural weapon has a range of three zone and is capable of spray attacks. It may be wielded with the Fists, Weapons, or Guns skill. It cannot be used with the defense trapping of Weapons unless you possess the Integrated 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.