The Night Light feature allows lowering the colour temperature to reduce blue output at night. The Power Management section has a slider to adjust the monitor brightness. Would it be possible to combine these two effects?

The Night Light window would gain two more sliders: to set the daytime brightness, and the nighttime brightness. Like the colour temperature, the brightness would be gradually changed within the transition period. It would probably be desirable to have some way of choosing the combination of effects to apply: brightness only, colour only, both or neither. The Switching Times could be shared between both effects, or separated if there is a demand for separating them (I don't need it myself).