Once upon a time, nightfall in Azeroth meant that things got truly dark--sometimes spookily so. For whatever reason, at some point Blizzard scaled back on the in-game lack of night lights, and brightened our nocturnal adventuring. Plenty of players have been clamoring for a good long while for a return to the dark and eerie Azerothian nights, and it seems as though their wishes may soon be coming true. In the following tweet, Lead Game Designer Cory Stockton indicates that some kind of darker night-time atmosphere is on its way potentially as soon as patch 6.0.
My personal hope is for some sort of toggle or slider in the graphics options, so individual players can choose how dark and foreboding they want their in-game landscapes to be. This has been a solution proposed by many, and I truly hope that's what's coming our way. Nonetheless, I'm eager to see whatever solution Blizzard has come up with.