I feel like the term "doctrine" is not being used correctly in this thread...
Anyways.
Lasers don't appear to be going anywhere. Even with systems like FWS-I and ENVG-B and other networked systems, lasers still have benefits, and 100% passive is more of a "goal" than a practical reality.
Meanwhile, as far as non-verbal communications and signalling is concerned, the output power that you need is going to greatly depend on the range, size, and frontage of your element.
While environmental conditions notwithstanding, "inherently" targeting lasers are not intended to have a beam that traces back to the user--the signature issue is more related to being able to see the laser at the emitter side, i.e., you will see a big bright glow right where the person with the laser is.
In 2023 most people seem to understand that using a white light has a signature penalty, however most people still have white lights on their social guns. It's neither a good idea to roll around with your flashlight constantly on blasting white light at everything, nor is it a good idea to then roll without one just because other people have eyes.
Fighting against an NVG equipped enemy really isn't as complicated as some people make it out to be, and maneuver is less about shooting at people as it is getting in the right place so that the enemy has no choice except to lose, and NVGs are a maneuver tool first and foremost.
Meanwhile, regarding... "direct action specialists," most of the time when the phrase "violence of action" comes into play, signature is no longer as big of a deal as the approach or on a movement or patrol or in a defensive posture, gun shots, even suppressed aren't really... "low signature," not to mention belt-feds, artillery and indirect, etc.. We used to initiate night attacks by shooting parachute flares over the objective trying to turn night into day, and I bet those guys use white lights a lot too when they're doing their business.
If you're talking "peer," or "near peer" and you're worried about getting noticed by the dinky little <100 mW laser on your pop gun but not doing anything to conceal yourself from the thermal drone loitering overhead you're barking up the wrong tree. The best protection is "don't be where the enemy thinks you are," and NVGs can make you mo' betta at that to a point, hopefully at least until you get close enough to see the whites of his eyes. Or maybe his eye-shine as you make him un-sighted shortly before making him un-alive.
~Augee