One Year Later
Admittedly, I think this idea was fucktarded to begin with ("Hey, Superman, howsabout we all go on vacation for a year?"), but, if it had to be done, here's how I would've done it.
The big-shot heroes go off to fight in the Infinite Crisis (which is infinite because Dan Didio is still in charge to this day, but, hey, I digress). Street-level anti-heroes remain on Earth, as do a few minor heroes, because, well, the big guys don't know them and don't send them an invite.
The heroes win Infinite Crisis (I'll admit I have no idea how IC went down). But they return to find that, for reasons they're unsure of, while a week or two has passed for them, exactly one year has passed on Earth since they left.
Normal humans have been forced to deal with supervillains for an entire year. Some places have fared better than other. Many governments have collapsed due to the chaos.
The United States has not exactly fallen apart, but the government has far more influence in some places than in others. There are just too many fires going on for Uncle Sam to put them all out, so to speak.
Lex Luthor has, surprisingly, been mostly on the side of the angels and kept Metropolis under control, but as a totalitarian city-state. (Let's say he was never president since we're re-writing past stories anyway. That was just fucking stupid.) Superman returns to a town where he appears to be unwanted. But it's more complex than that. About half the people are siding with Luthor (either for real, or out of fear). The other half think Superman abandoned them in their hour of need. He has to work to regain the trust of everyone. Oh, and the defenses Luthor has constructed? They have all sorts of anti-Superman measures worked into them, which will make Supes' job much harder. Luthor always thinks ahead.
The Middle East is in utter chaos. The heroes left in the middle of two wars. Those wars got a lot worse as the governments fighting them had to focus on other matters. And then R'as Al Ghul made his power play, carving out his own kingdom in the Arabian peninsula. This has caused serious problems, as Mecca is now in his domain, and this is causing significant friction with neighboring states. However, unlike Israel in the real world, R'as Al Ghul is a fucking supervillain with no qualms about committing genocide. Every attack on his territory has failed. But, on the plus side, what was once Saudi Arabia is now the most lush environment on Earth.
Gotham City has fallen into disarray. Not the feudal state that had occurred only a few years prior with No Man's Land for various reasons, but it's not pretty. The Penguin has been elected mayor of the areas still under the control of the Gotham government, because the citizens were so scared of the supervillains that they handed over the reigns to the guy they thought could placate them. His rule makes Boss Tweed look like a saint. Sure, the Joker doesn't destroy the place every week, but that's because Penguin's paying him under the table with the proceeds from his insanely high taxes. Many other "former" supervillains work as enforcers for Penguin, often by pretending to be rogues and scaring the people into submission. Jim Gordon pretends to be loyal to the Penguin, despite their past differences, but secretly leads (along with his daughter, whom he now knows is Oracle) a team of vigilantes made up of Harvey Bulloch (whose mouth got him canned from the force the minute the Penguin took over), Ragman, the Huntress, Cassandra "Batgirl" Cain, Anarky, Lock Up, and any other crazy Gotham-based vigilantes I'm overlooking. Together, they are the real force keeping the chaos of the "Lost Neighborhoods" from encroaching on the rest of the city, as well as Penguin's regime from getting too powerful. Gordon's greatest ally is, surprisingly, Bane, who leads a similar team of former villains, but prefers to stick to the Lost Neighborhoods and is based out of a building overlooking Crime Alley, where he has built a shrine to the memory of the parents of (and inspiration for) his onetime greatest nemesis. Bane keeps with him at all times the head of a popular and major Batman villain (I'd say Joker, just for the "holy fuck!" aspect, but that'd never happen), which he believes shows his enemies how fucking badass he is. And he's also managed to perfect Venom so that he doesn't lose his intellect or suffer any ill effects when he's pumped up.
Obviously, the whole world has been fucked up during the past year, but these are the ones I've thought of, and I don't care to put more effort into it since it's a moot point anyway.
