I personally know of more than a couple players who would return to the game if FSO started an hour earlier. Its after 1:00 AM est by the time we wrap up now.
I don't believe it was ever tried. It was certainly discussed internally multiple times and probably a couple surveys, but at the end of the day I don't believe there was an overwhelming sentiment to make the change.
I would definitely consider it. Make it 9pm and it would be a sure thing.