The Greatest Super Power That Never Was
The greatest super power that never was is the power to blink truly annoying people into an alternate dimension. In this alternate universe, these people would sit in a kind of purgatory, trapped with other truly annoying individuals. The hero would have to make periodic visits to this other place to determine which of the inhabitants have changed their ways so that they may return to the true world.
Of course, a hero of this nature would have to be totally just and righteous and good to determine fairly and accurately who would need to go to that dimension. That person wouldn't ever really exist. And that is why this is the greatest power that never was. Of course, one day this ability may very well manifest in a retail setting, in which case no one would be safe.