I'd be up for it. It could make for a nice epilogue to the trilogy. It's not needed, but it could be fun. And the universe would have really changed...
That's so funny you say that because I do the same thing with All-Star Superman as the quintessential American Superhero Comicbook, I may have to try...
That's a loooot of speculation. Cable, who has lots of experience with them from the future, seemed quite certain the EMP grenade would do the trick....