Answering some points noted here and there, without using direct quotes from 2-3 pages ago:
- I am aware that Iron Man is the director of SHIELD and thus has some legal/international authority on Earth. Yes, in Marvel, SHIELD is international, so he should have a bigger reach than simply the United States. And I know the SHRA can be far-reaching; Iron Man & his troopers went after Storm despite the fact that she was married to T'Challa and thus Wakandan Royalty by law, because she was actually born in the United States before moving to Africa and thus was a U.S. citizen. But the Nova Corps are sort of like the Green Lanterns who sort of have "space cop" jurisdiction. Nova can just up and leave. And it is always interesting to see in NOVA how differently Iron Man presents the law against someone who could potentially kick his arse, vs. someone he greatly overpowers. Someone he feels he can beat, like Prodigy or Spider-Man or no end of resisters, he just gives the "Resistance is futile" speach. But against Sentry or Nova who could probably give all of SHIELD a fight, suddenly he's all, "Well, think it over, good buddy." It's shrewd and intelligent naturally, but it can't help but be noticed. Diamondhead, notably, hasn't been seen since the 90's when he was shattered for the second time in his career (back when Cap had his "energy shield").
Like I said, the book has a "you can't come home again" sort of vibe to this story, and it helps show part of what Marvel sometimes does right; while Joe Q usually ignores the wishes of fans when they ask questions about company policy or offer criticisms, sometimes they do seem to "tap" what the fans want to see and deliver. Ever since ANNIHILATION and CW started, fans wanted this issue, for Nova to go back home and react, and it is happening. Next issue continues that. And when done well it seems organic.