interesting indeed. i think what is interesting now is what direction the manga takes after this.
on a tangent, there was an episode on the Justice League where Lex created a robot that can copy anyone's power just by looking at them. it got to the point where, after it copied everyone's powers (except for batman, hes but a mere mortal), it became so powerful that defeating the heroes would have been pointless. having become a god it decided to leave earth in search of more interesting things.
it is not entirely the same and it is certainly nothing new but the concept is very similar. it is likely that the king wants to fill one last gap and hten that will be that. considering how powerful he has become it is unlikely that any of our guys would have been able to scratch them ever since the bomb.