Is Nightwing the new Batman ... of Earth-2?
This is what the folks at Big Monkey are calling the "Peyman Theory" after the customer who devised it. It may be all over the internet elsewhere, but I haven't heard it until today.
Assume, for the moment, that Earth-2 will remain, perhaps as the basis for a new Earth-2 based imprint.
Plots have been arranged to loosen Dick's ties to Earth-1. He has been separated from his two groups, the Outsiders and the Titans, and Bludhaven, "his" city, is gone.
Narrative pains have been taken to show that Dick would fit in on Earth-2. Infinite Crisis has highlighted the facts that Earth-2 has no Batman, that Nightwing is trusted by everyone, and that Nightwing is as good a man as anyone on Earth-2.
There are also metatextual clues. For example, interviews have emphasized that Nightwing has a very important but unspecified role in the Crisis and its aftermath.
The truth could be something simpler, like Bruce taking some time off and Dick taking his place, with no Earth-2 about it.
But the Peyman Theory still intrigues me.