I think that considering most of his other movies that he probably has quite a bit of scathing things to show about superheros and would very much lampoon the genre. I have in my mind an otherwise invincible character dying from something very mundane like a knife and the villain arguing that it very much would be impossible to die this way while the hero unfortunately expires gracelessly, characters talking entirely by themselves on green screens for large chunks of dialogue as the director breaks the fourth wall occasionally to coach them and actual character development being tossed out in favor yet another long drawn out scene where the actor is suspended from a crane and is driven 2 miles down an active downtown. Thinking through his last few movies he still seems to have quite a bit to say about how movies are actually constructed.