My last 2 cents on landing lights - they do have some effect in Il-2, but much smaller than in RL. In real airplanes landing without a working landing light in the night is considered an emergency procedure, and in anything faster and less sturdy then a small piston airplane it is very tricky (unless you have radar altimeter, that can be useful). Frankly, in B-25 mission I practiced over and over, the bigger problem were the invisible runway lights. You do need some visibility even for precision approaches nowadays, CAT I (which is basically what we have for B-25s) calls for 200 feet vertical and 550m RVR/800m visibility. Though if I had an option to either risk it and follow an imperfect GS all the way to the ground, or ditch in the South Pacific, I would take my chances with the approach
.
Also, I can't remember anyone answering the questions I had in the beginning - what is the glideslope angle used and how far from the runway I need to be for the "tower" to activate the runway lights (and if this value can somehow be changed by mission builders)?