At night the darkness is causing major issues with play ability. Lights seem to be much less effective now, and there is no "splash" effect of lighting, causing rather small lighting radii around houses, any light poles & sources. This makes it extremely hard to see and operate at night.
Requesting the lighting to be tweaked to create greater visibility at night. Especially in a vehicle.
Running on custom terrains this has caused a major issue within many communities and there have been hundreds of complaints about it to server admins. The issue exists in vanilla terrains as well.
Many players are now running with gamma to max (2.00) at night to be able to have equal visibility to as it was before the 1.6 update.
1.58 Lighting
http://image.prntscr.com/image/c20e1d4b9c1e40908a12e15f6aab90c9.png
1.60 Lighting (Similar Location / Same time)
http://image.prntscr.com/image/80282b1e9e14432196ebb8a273325fff.png