I have a question for you all. With Fallout 3 wanderer's edition and Fellout installed. Enemies are quite difficult to fight and see at night. Is there a mod that makes anyone more difficult to spot at night? Perhaps, lowering the perception of players and npcs by half at night or some such. I ask this because it seems very unfair to me that I can't see enemies almost at all at night, but they can see me like they have night vision.

MMM which you should already be using adds a penalty to creatures that are not supposed to have nightvision. Nightghouls for example will fight without penalties, but raiders not so.