Thematically, transhumanism is about becoming more than human, and superhumans are more than human, so seeking out superpowers is a perfectly plausible thing for transhumanism. However, it depends a bit on what you mean by "supers"; do you mean superpowers, or superheroes?
A little of both. Superheroes and just powers. Low level marvel, but closer to classic Wildstorm comics or image.