Rebooting the whole danged universe again, with #1's? Sure, why not. But then when one of those series gets close to a milestone (like Action Comics or Detective Comics #1000), they'll put it back to its original numbering.
Besides, continuity hardly even matters anymore. A creative team will come on board and just undo or re-introduce something from someone else's run without a second thought. The absolute best stuff in mainstream comics (mainstream being DC & Marvel) have been the ones where creative teams have been allowed to tell their own beginning, middle and end. Very rarely, it works out within the title's main book (Captain America, Daredevil, Green Lantern (up until Blackest Night, anyway)). Most times, though, they're mini-series. All Star Superman, Long Halloween, Kingdom Come, etc. In the latter's case, they're outside of the "mainstream" continuity, free to do whatever they want and focus on just telling a good story with a clear beginning, middle and end.
Fact is, the longer these characters exist, the bigger their iconology becomes. Superman, Batman, Spider-Man and other cash cows are more or less unchangeable (at least in any kind of permanent sense). Their mythos is tweaked here and there, usually due to outside mediums (radio, TV, movies), but their basic mythology remains the same. I wonder if the companies were able to realize that. Maybe instead, we could see maybe a single creative team have a specifically limited run (12-24 issues) to tell the story they want and finish they way they want. Screw these attempts to tell any kind of concrete contunity, anymore.
So yeah, eat it up, fanboys. I'm sure this'll rake in a lot of moolah for DC, with the leigion of braindead fanboys.
