Loved the interview and the art looks amazing! It really seems that Grant enjoyed breaking down the concepts involved and fitting them together. Superman and The Authority shouldn’t work as the team was created to be an F You to traditional superhero teams that just fight bad guys and don’t actually solve world problems. It sounds like he really found a great twist here. I can definitely see Golden Age Superman as the precursor to The Authority.
Loved his response to the evil/dictator Superman trope.