The built-in brightness of 0.6 is great for just being able to see everything and showing off a factory on a stream, but it does have the unfortunate effect of rendering lamps pointless and overpowering other lighting effects like train signals, heat pipes, and other glowing machines.
Changing the setting to 0.2 still allows me to see where I'm going in my factory and provides a visual contrast between factory and wilderness, but also lets me see all the pretty effects.
Have you considered adding a setting to allow players to choose the brightness that suits their needs?
