This kind of rolls into the other thread...
http://www.planetside-universe.com/forums/showthread.php?t=36841
No matter which kind of night we get, I think a night "vision" would be bad. Keep it to scopes or flashlights, or something.
And as usual, absolutely, positively,
requiremently...no grainy green night vision.
I'm not sure if it's popped up in any of the night time threads either, beyond a stray comment from Nukem, but there could also be a fair amount of ambient light sources at night, be they from luminescent trees, plants and creatures or lighting on armours or vehicles...perhaps even irradiation from plasma and such.
Imagine similar lighting for the head of a MAX suit, for example.
As far as night vision "skills", I could see that being tied into particular classes (infiltrators, recon etc.) rather than having it's own tree.