There's a middle ground if you like, while you wait to see if your suggestion gets implemented - you don't need night vision very much if you use incendiaries and flares all the time. Indeed, if you've picked up Ambush, it might even be helpful to light things that way.
Oh, I definitely use incendiary grenades at every opportunity on builds with throwing because it's (in my opinion) one of the most fun things in the game, haha.
Putting down a bunch of bear traps in a room, tossing napalm after napalm at the poor saps that get caught and then shutting the door is probably the pinnacle of this game's combat for me.
Only problem is that if you don't put like 50+ points into throwing there's a good chance you'll just explode yourself (or, with flares, give your enemies an outstanding chance to shoot your dumb fat face), so in that case I use NVGs.
And for the record I don't like green NVG effects in first person games either; in those I find it's usually pretty much pointless, with the darkness having no effect on enemy AI and gameplay like it does in UnderRail.