What amused me about The Atlas of the DC Universe
was that it put Metropolis, presumably the largest city in the DCU's America, in Delaware, the smallest state. Would there be any Delaware left?
Anyway, I've always felt Metropolis shouldn't be that close to Gotham, because if they're neighbors, what's to stop Superman from popping over and taking down the Joker on his lunch break? True, Superman is often portrayed as fast enough to get anywhere on Earth in moments, but at least a greater distance would make it seem less obviously problematical. I'd considered making Metropolis a West Coast city, though of course Smallville
put it in Kansas so it would be close to the title locale.