I use a NM XSearcher with BlackSun conversion. Maybe a supercharged BlackSun might get a little further. But the thing is big enough, and what would I really get out of it more than I do now?
I must try the NM800 head on it sometime and see if there is much in it. Or much if given a supercharged BlackSun? The point of the exercise is to get weight and bulk down.
Someone might one day get both LED super power and lens to do a light sabre thing at a respectful weight and bulk. Ahh, they do its called a laser, but the picture from a lasers is just are horrid! Led and a matched lens is the way forward if someone can have the Chinese to make one that is fine tuned to what we require. Not holding my breath.
Bruce is right you need enough for your practical shooting range and the rest for a good bit of backstop. Several ways to do that. Use your Thermal Spotter for finding and seeing the landscape.
The future will be more clarity at the ranges we are at now. More cost effective and less bulk would be a bonus.
35K camera sensors are doing it without ir already. The future looks bright