Okay, now I'm going to a few that are similar to Rage. For the Fast hero:
Burst of Agility
By spending an Action Point, the Fast hero may fly into a Burst of Agility. Entering a Burst of Agility is a free action, and a Burst lasts for a number of rounds equal to 3 + the Fast Hero's (newly improved) Dexterity modifier. While in a Burst of Agility, the Fast hero gains a +2 Morale bonus to Dexterity, a +5' Morale bonus to Speed, and a +2 Morale bonus to Reflex saves. After the Burst of Agility ends, the Fast Hero is Fatigued for 5 minutes.
Lenghthen Burst
The Fast Hero's Bursts of Agility last for a number of rounds equal to 7 + the Fast hero's (newly improved) Dexterity Modifier.
PREREQUISITES: Burst of Agility
Power Burst
When the Fast hero enters a Burst of Agility, they gain an additional +2 bonus to Dexterity and Reflex saves, and a +5' of movement (for a total of +4 Dex and Reflex, +10' Speed).
PREREQUISITES: Burst of Agility, either Lengthen Burst or a tallent from the Quick Reaction, Defense, or Increased Speed tallent chain.
Hmm . . . seems a bit overpowered for a tallent. Should I bother writing a Rage ability up for the Tough and Strong heros, or is this just too powerful?