The rangefinder dose have a night vision mode. (Uses the same key as you use to turn NV goggles on/off), in fact it does all the things you want (binocular with night vision mode, variable zoom, with digital azimuth and range indication), the only thing it doesn’t do is thermal imaging.

As for old style binoculars, there is nothing wrong with that, super reliable proven technology that cheap, little changed for many years and has a long service life that will still be around many many years from now.

I agree with b101uk.
/downvoted

As has been pointed out, the existing rangefinder already does most of what you want.

There will also be a lot more content in the final game, and there are certainly some FLIR toys in the pipeline.