So, I'm sure we're well past the point of implementing this, especially since the idea isn't an outright mimic of CoH... but anyway-
I've been tinkering with a variety of survival/crafting games lately. They really seem to straddle the line between "Oh Wow, I can make this stuff!" and "OMG how much more mats do I have to grind to make my stuff?"
It occurred to me that if it felt a little less tedious to grind the materials, I would love to play a superhero game that used these sorts of crafting systems to build the various superpowers that characters have. Imagine the unprecedented potential for customization!
Anyway, just an idea to throw out into the zeitgeist, no expectations.