Re: Power Defence... Ugg
The thing here is that yes, while HERO can be quite open-ended, the gate-keeper, so to speak, is the GM, who can write the campaign rulebook to allow or disallow certain things. ANY system can be abused if people want to...a friend of mine had a AD&D campaign where people had around an 80+ armor class, and stats into the 50s, because he allowed the combination of rules to allow it to happen.
So, once again, I would go with the advice I have seen on this topic...that you as the GM can set whatever limits you wish on the powers.
John B.