Power as burden
Superhero fiction's most powerful insight is that extraordinary power is not a gift but a burden: a responsibility that cannot be refused once accepted, a weight that shapes and sometimes deforms the person who carries it. Writing power as burden requires showing not only what the hero can do but what their power costs them: the relationships maintained at arm's length to protect loved ones, the choices made with incomplete information that could not wait for certainty, the normal life that cannot be lived because the extraordinary life will not permit it. The hero who has genuinely given something up for their power is more compelling than the hero who simply has power and uses it.