I was kind of excited about Superpowers when I first added it to my to-read list, way back in the day. When I borrowed it from the library, that ardour of anticipation had cooled, and I braced myself for apathy or outright dislike. Superhero fiction just seems like a disappointing genre for the novel these days. It’s not that the superhero novels I’ve been reading are bad. No, it’s worse—they are bland. Soon…