In regards to night vision, I'll post my .02 cents here, in hopes the devs could use it as a model for an upgraded, more realistic night vision system.
Real military night vision currently has a 40 degree FOV, at least on the AV/AVS-9, and are 3rd generation devices. Obviously it would be relatively difficult to simulate a 40 degree FOV, unless it was an ugly circle covering most of the screen except the pitch black outsides. Another thing that 3rd gens have in common, is the way they handle blooming. On 1st and 2nd gen devices, a very bright light (like weapons fire) would end up damaging the NVD's themselves. In 3rd gen devices, the NVG's themselves have a built-in filter to prevent that from happening. It doesn't prevent blooming, but it does limit the amount of light filtered through the device. What that means, is if the bright light (like missile launch), is in the NVG FOV, the NVG's will actually turn down everything else, so you end up only seeing the missile trails. So realistically speaking, instead of the bright white flash that comes with weapons fire, it would actually be a dark, black flash. Here's a video to illustrate what I'm talking about:
http://www.youtube.com/watch?v=3i7uyjkVp_0&NR=1Another thing about NVG's, is that even the best (MIL-SPEC 3RD GEN), can only display a visual acuity of 20/40 under the best conditions. In other words, make NVG's have a slightly blurry appearance, and add in dark flashes from gunfire instead of bright, and you've got a fairly realistic NVG display in the game.
