Re: Alan Grant/Norm Breyfogle Detective Comics era
^ That's what I like about Grant's stories, they were small crime thrillers that didn't involve the entire DC universe.
A few of the Marvel Superheroes are somewhat niche characters that aren't extremely versatile, thus they don't have a lot of longevity potential. For example, Namor is a water guy, Silver Surfer is a space guy, Dr. Strange is a magic guy, and so on.