It looks like Johns may be tackling this “Everything Happened” issue in
Flashpoint Beyond, and that his proposed solution is going to be Hypertime. That's what I'm getting out of his introduction of the “Divine Continuum”, consisting of Space (the Omniverse) and Time (Hypertime); and with his inclusion of Mime and Marionette, which makes it a sequel to
Doomsday Clock. I think he's going to be presenting the notion that the Flashpoint timeline exists elsewhere in Hypertime, as do the “Metaversal spinoffs” that were introduced in the last issue of
Doomsday Clock: Earth 2, Earth 1985, Earth 52, and others. This will lay the groundwork for restoring the
original Hypertime notion of “Everything Happened”, which has the caveat of “…just not all in a single timeline”.
Dark Crisis, meanwhile, appears to be operating in the “Space” branch of Johns's Divine Continuum, being a story of the Omniverse. In particular, I expect that
it will end up with the Multiverse-2 first mentioned by Morrison in
Multiversity and recently revealed to be the ruins of the pre-Crisis Multiverse. Basically, I see
Crisis on Infinite Earths,
Infinite Crisis,
Final Crisis,
Multiversity,
Dark Nights (both
Metal and
Death Metal),
Infinite Frontier, and now
Dark Crisis to be stories about the Omniverse; whereas
Zero Hour,
The Kingdom,
Flashpoint,
Convergence,
Doomsday Clock, and now
Flashpoint Beyond are stories about Hypertime. How the Omniverse and Hypertime relate to each other is an open question; my own preference is to view the Omniverse as existing within the central timeline of Hypertime, with each branch in Hypertime having its own version of the Omniverse. But that's just speculation on my part.
I'm hoping that when they finally end the current “Everything Happened” phase of DC's story (in the sense of “the denizens of Earth 0 remember every iteration of the Metaverse”), that Hypertime notion of “Everything Matters” will stick around. Let Earth 0 get a single, consistent history, where
not everything happened; but make it clear that whatever gets removed from Earth-0's history exists elsewhere in Hypertime — and, just as importantly, that Hypertime
isn't where stories go to die. Encourage
more stories like
Batman: White Knight or
New Frontiers that don't even
attempt to fit into the Metaverse; just slap an “Elseworlds” logo on the cover as a heads-up to any continuity cops that the story in question isn't in continuity and isn't subject to their jurisdiction: where the Elseworlds label is concerned, apply the advice of Rip Hunter from the introduction to the
Justice League: New Frontier animated special:
“Hundreds of years ago they said the world was flat. Today, experts will try to tell you there are 52 worlds. The truth is there are infinite worlds out there and every year dozens more spring to life. The scientific term used to describe this state is ‘fictional’.
“Who cares what world we're on? Just sit back and enjoy these untold stories from the last heroic age.”
In short, let Earth 0 cater to continuity buffs, to the extent that that's still possible; and promote Elseworlds as something for DC writers who want to tell stories without being tied down to a single, consistent continuity.