Continuity at both Marvel and DC has become such an incoherent, boring, frustrating, cynical treadmill of bait-and-switch fraudulence and pseudo-drama that the only way for writers to tell a good story is to actively quarantine themselves from the main books.
Post-Rebirth GL and GLC succeeded precisely because they were IIIIIN SPAAAAACE and safely removed from the shitpile that is DC's primary continuity. Johns could set up new alliances, opponents and origins, intro a great new comic-relief villain (Larfleeze) and so on without having to carry the water for a decades-long, self-contradictory meta-backstory which eats it's own guts with every RetCon and renders even the most iconic characters trivial or unrecognizable.
Marvel did the same with their "Annihilation Saga." By throwing the story out into space, the writers could have some fun with long-dormant, space-themed characters and do a grand space opera of conflict, loss and heroism without polluting it with X-Crap or the like.
That's why I embrace the DC Reboot. The old continuity must be abandoned. Don't bother planning any kind of rescue mission; there's nothing left to save.
Take off and nuke the site from orbit.