I recently came across Wiedzmin Lighting Mod that's actually updated and in my opinion is the best lighting mod that I have tried. At the moment it's currently on version 7.6 and the mod author stated hopefully today or tomorrow that version 8.0 will be released and it should address some of the issues with the nights just being unrealistically bright. I hope that this will be the answer, looking forward to giving it a shot.
Dragon's Dogma's nights are incredibly immersive, I completely agree. I love the uncertainty from not being able to see what may be in front of me, great example.
Some of the new changes coming with 8.0 regarding nights.
- In all regions nights are now much more ominous with tone
- Foliage will be much darker in nights
- Tweaked Novigrad sunrise and sundown to look much more natural, also sun exposure is fixed
- Tweaked sunrise and sunset in Velen to have more brown ominous feel
- Tweaked Novigrad night moon light intensity, roads are much natural now
- Tweaked sunset in Swamp also to have much more ominous feal