A good atmosphere is a goal for this mod, though right now I'm conflicted by this one. Using more/brighter lights in fog/smoke just reflect more back at you, so it's harder to see; that's why vehicles have dedicated lights for this purpose.
I don't think I'd add more types of lights to the game, and I already like how the game layers the lighting effects with the pollution. That said, I'm on the same wavelength as you with "gas" lamps, I think, because I dislike the default white color and would prefer something a bit more industrial. Not only is that just my taste, it's also only based on my very few examples of my own factories. Tuning parameters or providing the most generally good values is hard for that reason.
If you have a heavily polluted factory for me to use as an example during testing, that would be great, so I could see how much of a problem and/or the impact of the changes for a wider variety of situations. Beyond that, it could serve as more example images, if you don't mind that either.