Since the game is seemingly lacking in the headgear for your troops, I came up with a few ideas:
THERMAL-GOGGLES: we have night vision one's, why not thermal? allowing detection of heat signatures trough thin walls in a, say, 12 space range while making it harder to shoot at anything outside of that range a lot harder.
BRAINWAVE DETECTION GOGGLES: I'm thinking, based on the research into the alien brain, it might be possible to create a set of goggles that, while not saying were the aliens are, would display a threat counter that would tell the user of the amount of alien brain waves in the area and how threatening this is. e.g. a wounded, non armoured, alien armed with a plasma pistol, would be low threat, while a group of particle cannon wielding, reaction-fire ready drunk and disgruntled Scotsmen aliens would be high threat.
'ZOOM' GOGGLES: Goggles that are, fundamentally, a set of targeting computers stuck to some Binoculars for your troops, boosting the long range Capabilities of a soldier while making shots take some more TU's and making reaction shots almost impossible.
So, are they any good?