mixed feelings about this.
First times I logged in, I thought the same way: huu, what is this? how is one able to play under this circumstances.
Then it changed a bit, I found some things to do even when it's dark, without clouds the moon gave enough light to see something, and, and that is the main point I think: I found this time beeing nice, relaxed, would later perhaps sit with friends around a fire, and thought of it as a very realistic part in a game where you have to be carefully where to go (alone lol).
At the moment my opinion is: Leave it as it is. Okay, I have an Nvidia, perhaps not so dark for me than for others (though I could not see anything in time).
This is of course a very subjective thing and there may be different views about this.
What - on the opposite site I find just awfull: To give the client the possibility to just change the daytime to what everybody likes. Because this wipes all time away and makes all equal which creates a loss of quality concerning simulation of reality.
Cheers