Love the map. It feels like an awesome playground, and it's actually lots of fun to play on. However, the terrible way it looks is in my eyes completely inexcusable. Let me explain:
This is what you're looking at most of the time. Now, it's obviously supposed to be a night map. Why this has been done is a complete mystery to me. Right now it looks like the player has a very powerful floodlight strapped to its helmet which extends for half a mile. Except for the skybox and the thick black fog, there's nothing to depict that this map is actually set at night time. Have a look at this shot, for example:
This terrain shot could just as easily been from any other grass map. Fully lit, completely green, it looks nothing like a night setting.
Now, I understand that there's supposed to be low-visibility for gameplay reasons. But the engine you guys are working with is simply terrible with the sort of lighting and subtlety required for a convincing night setting. The result is immersion-breaking ugliness in an otherwise very well made map. I know it sucks, but you would be best of working with the limitations you are given instead of against it. I learned this the hard way myself when making maps for a variety of old, crappy engines.
I would really push for a handful of simple changes to this map. Ditch the half-done night setting completely and, for example, give this map a light blue or warm yellow tinted skybox (to complement the greens). Keep the fog density, but make it light blue, yellow or green, verging on white. This would make sense in a 'foggy valley' kind of way. All in all this would make it a much nicer place to be. And moreover, it would put the visuals on par with some the best looking maps out there.