Originally Posted by
Dataweaver
It's almost doable; the main nips and tucks you have to make are to slide Damian's birth further back to a point before Dick left for college, and to retcon Damian's age when he was introduced in Morrison's run to 12 instead of 10. That, and ignore the implication in JSA#1 that “13 years ago” is Batman Year One, and just treat it as a Catwoman story that happened several years later. The only real problem with this is that it squeezes Dick's departure to college into the later part of the Bronze Age: instead of happening in the publishing year of 1970, it might have to be pushed forward to as late as the formation of the New Teen Titans in the publishing year of 1980; that is, the Dick is Robin while he's going to college” stories get lost.
But to be fair, that's not new: for both Dick and Barbara, the bulk of their Bronze Age adventures (Dick in college; Barbara as a Senator) have been out of continuity since the Crisis; and not even Morrison saw fit to bring them back when he implemented his “everything in Batman's history happened” post-IC retcon.
It's not so much that I think that we should be beholden to it as it is that sticking to the original time traveling weirdness of it actually solves a number of problems: while we need to make room for Damian's birth on the timeline, Morrison has at least allowed us to place that event in the early Bronze Age; if we attempt to do something similar with Jon, we end up either pushing the wedding of Lois and Clark to before the Crisis on Infinite Earths — which is only doable, as I see it, if you don't insist that it happened after the Death of Superman and the Reign of the Supermen, as that places most of the 90s era of Superman stories before CoIE.
And besides: restoring something resembling the pre-Superman Reborn history provides a “world of New 52” hook for the writers to use, should they decide to: in the original history, Lois, Clark, and Jon spent a decade there, with the last bit (from Rebirth to Reborn) involving Clark temporarily replacing that world's Superman. Which means that if we ever do a crossover with that world in the future, Clark and Jon would already be familiar with it.
Crisis on Infinite Earths ended with the Olympians offering Steve and Diana a home in their realm. While Wonder Woman doesn't need a time skip, being herself immortal, there's no harm in including one that's handed to you on a silver platter. Wonder Woman's 21st century debut, then, becomes a return of her and Steve Trevor from Olympus.
There are two catches with this idea: first, Steve's return would have political implications when he tries to reintegrate himself into the modern world — similar in many ways to that other Steve over in Marvel Comics. But second, if Steve and Diana were married before they left for Olympus, they'd still be married now. And conversely, if we don't want them to be married in the present, then we have to retroactively annul their marriage before the Crisis. I don't have much of a problem doing that, mind you; although that might cause some problems down the road if Lyta Trevor is ever referenced again. Is she Diana's daughter or Helena Kosmatos's daughter? Were her parents married, or was she born out of wedlock? Was she raised by Steve and Diana, or by Derek and Joan Trevor? There's a lot more wiggle room to work with here than you might think, considering that Diana was raised by the Amazons and they have their own views on matters involving sex, marriage, and child rearing; so the idea that Diana had a daughter out of wedlock and then handed her over to a worthy family (Derek and Joan) to raise her isn't entirely unreasonable. But it has a few ugly implications about Diana in particular and Thymescrian culture in general.
Finally, this this effectively reboots Wonder Woman again, I'd want to take this opportunity to restore Thymescrian technology into the mix: borrow heavily from Morrison's Earth One: Wonder Woman, with “Purple Ray” medical technology, invisible aircraft (though not airplanes or jets), “magic mirrors” or the like that allow for remote communication, and so on. With this, you could even retcon the aforementioned “Diana and Steve retreat to Olympus” as “Diana and Steve return to Thymescria”, with the purple ray technology gradually rejuvenating Steve stop that he's young again when he arrives at the start of the modern age of heroes.