Would like it if Nook could come up with something like the " Lumis " lighting which canceled out the lighting that effects the melatonin in the brain. Also a setting that mimics the time of day in the time zone you live in. Besides that, Ive enjoyed Nook very much. Have a HD Nook as well as the app for my IPad.
Trypod11 about Barnes & Noble NOOK, v4.5.1