Superpowers that could conceivably exist in a scifi series.

Hey guys, so I have been considering superheroes in my scifi setting, but i don't feel like hand waving comic book logic their powers to exist. So far I've come up with nano technology inherited from parents that can augment children with superhuman capabilities.

What do you guys think of this method to make superheroes a thing? I did have an idea of genetic engineering but not sure on that one yet.