So if there's no Krypto in the Nu52/DCYou universe now, Johns and the DC crew will have, in theory, talked about what Krypto might mean and where he might have a role if he were brought back... And in the case of Krypto, they might have a point, I think, in re-establishing the character. New readers who like dogs might conceivably see a dog in a cape on the cover of a book and pick up said book. There's no other "hit" quite like that without Krypto or a Krypto stand-in.

Where I can't the purpose of this is in finding a "new place" for, say, Stephanie Brown, Conner Kent, Morgan Edge, Maxwell Lord, and everybody else who's ever been a storyline-specific or background character, everyone who might conceivably be seen as part of a "legacy." I believed one of the few strengths the Nu52 relaunch had was in not looking back and trying to drag every little jot and tittle from the past forward into the future. Much like Crisis, however, no one gave much thought past the blank slate they were creating for themselves. Everyone pretty much agreed a blank slate would be a good idea. Everyone turned themselves inside-out coming up with ways to provide themselves with one. 

Once done, however, there suddenly wasn't much to do with it. The Post-Crisis writers kept sneaking out back to sift through the dumpsters for stuff to bring back in. How many "new" versions of the Crime Syndicate did we get? I counted at least three. And two new Comet the Super-Horse variants. The Crime Syndicate of Earth-3 was literally the first thing Crisis wiped out. Might it have done so for a reason? 

Nu52 did far less of that until recently. Convergence was an exercise in dragging the dumpster back into the room and upending it to look at all the junk again. Were they simply out of other ideas? I don't know. I wasn't reading much of what they doing. None of it looked interesting. Convergence was interesting from my own limited perspective because there was the "original" Earth-2 Dick Grayson and Helena Wayne again. Hell, there was the Crime Syndicate of Earth-3 again, fer cryin' out loud. I still didn't buy any of it, since I know from experience that none of it was going to stick. It was a stunt. 

Bringing all that sort of stuff back now in the style Johns is suggesting would be something beyond a stunt. It would "matter." These concepts would now have firmer footing in DC's line of comics. They would simply fade away. So, I can see the logic here... 

If you're only targeting fans like me, who for whatever reason feel connected to Krypto or the Crime Syndicate or Stephanie Brown. DC is once again giving up on new readers; giving up on creating the next thing that would hook readers, and instead going back to the dumpster in the alley, hitting the stuff from there with a hose, and reselling it to us. 

Us. To no one else. Because there just may be no one else, now or ever again.