Back in 2011 , DC decided to try and streamline their years of continuity again by doing New 52. The concept was a more Marvel attempt at doing business and re-imagining properties for the 21st century. Dan Didio had envisioned the idea back in 2005 during Infinite Crisis and wanted to restart things there. But didn't get approval then for it. So he had to wait 6 years later to do it finally and it spun outta Flashpoint.
So lets examine it....
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PANDORA - DC's newest version of Pariah & Harbringer.
At the end of Flashpoint , this cosmic character named Pandora seemingly appears to Barry Allen and proclaims that he has to combine the 3 time streams into ONE unifying time stream. As pictured you see the Wildstorm , Vertigo and DC Universe. All 3 were supposed to be combined and a whole new single universe was to emerge. Like DC's Post Crisis on Infinite Earth's.
Pandora was supposed to be the last remaining figment who remembered the old DC Universe and how there was a Wildstorm & Vertigo. Like Pariah & Harbringer she was supposed to remember this and she appeared in nearly all the titles in appearances. Those 2 characters had appeared in a few DC post Crisis books before editors decided that they needed to phase them out since the whole idea was...no one is supposed to remember Crisis. But Pandora made these appearances and hinted at something big coming...something "cosmic" it seems.
People wondered what it could be and DC seemingly decided to change their mind on Pandora. Instead of the cosmic character we met in Flashpoint , she now was someone who unleashed the 7 deadly sins on Earth back as a cave woman (how did she know about 3 time streams ?) . Doomed to walk the Earth forever til she recaptured them in the box , it suddenly appeared in a Justice League & Justice League Dark storyline. This led into the Crime Syndicate appearing from Earth 3 and it was a complete clusterf--k that really even now near 5 years later made no darn sense.
DC seemed committed to this new direction of Pandora and launched a new series and tied other characters into this direction. You had Phantom Stranger and The Question. Both characters themselves had their titles called the "Trinity of Sin" (many online coined the term the Trinity of Suck since the new origins and all sucked so bad for all 3 characters). By 2014 , DC seemed to sense that no one was buying Trinity of Sin and cancelled all 3 books. No one speaks much about them and Pandora quietly disappeared til 2016. Where she was turned to dust by Doctor Manhattan realizing everything was a lie , that the whole 7 Deadly Sins deal was not real for her.
Earth 2: Hawkman leads the new Justice Society of America.
Back in 2012 , DC decided to recreate the classic Justice Society and use magic and sorcery as a key situation on this new Earth. The writer they gave this to was James Robinson who had a long track record for solid work at DC. His 1st arc reintroduced a younger Jay Garrick who is gifted speed by a God. Allen Scott who is given a magical ring that gets its power from the Earth's green and more. The idea was that Superman , Wonder Woman and Batman had perished on this Earth and this new group of "Wonders" they were called would take up the mantles.
Robinson clearly had a direction in mind for the series and one rumor was he had wanted to recreate the Justice Society with these characters. One key character he wanted was Hawkman. So in a planned crossover with the New 52 which would happen would have the Earth 2 characters encounter this Earth. Hawkman would meet the Hawkgirl of that world and decide to go to that Earth and become the teams leader.
Before he could do this however Robinson had issues with DC and quit the series after the 15th issue. The next 17 issues was some of the worst grim and gritty pieces of crap work that various writers turned in. Earth 2 became so damaged by the whole World's End arc , DC unwisely geared it around that and destroyed the concept completely. Earth 2 disappeared a couple years ago after Convergence and new title that didn't last. As people have said , this was a concept that would have worked but DC ruined it within a year and half.