[quote=Pariah]
We could've dropped it onto a more remote region where the destructive power could be seen without killing many (even a small military post). The Japanese were already considering a surrender before we dropped the bomb, just showing the power of it without killing all those people would've had the same effect.
Considering that Japan didn't surrender after Hiroshima, your suggestion is already full of holes. It wasn't until after the second attack that the Japanese decided to surrender.