I made the same type of prefabs. I broke them down into 6 groups (Power Systems, Propulsion Systems, etc) and that seemed to work really well. It also makes creating the prefabs much simpler. That way you do not have to wait for the system to cycle through every power every time you save, open, copy, or paste.
Monolith, the Living Titan
"The HERO System is not designed to represent real life. The game is designed to represent heroic fiction as presented in comics, novels, television, and movies."
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