Here's something i'm testing on my GN that I thought i'd share. I personally find the auto backlight levels a bit low, so i've tweaked them a bit. This is very much in TEST phase, let me know how you find it and if it improves things for you. This is for expert users only at this stage, install via ClockworkMod recovery.
This is tested on devices running the ITL41D / ITL41F ROMs.
Update: There is now 2 different files with 2 steps of brightness increase!