first impressions:
- The waypoints are rather sparse and could use some beefing up. Don't worry about the bots getting stuck in places, you can easily remove waypoints if they are.
- This map really is HUGE, like you tagged it. There are a lot of big open and undetailed places like the roads. If you could find a more interesting texture or some geometry to place around there it would break up the running-and-getting-nowhere feeling.
- I see why you would put the health on top of each other, but I feel that getting 50% health at once is too much. Perhaps more 25%'s would be more balanced while in battle.

The background is nice :)

Theming, well it certainly is a city but I'm sure you still could do better. There are a lot of (custom) mapmodels which would fit into the scene.
Texturing feels odd (the futuristic trak5 and gibbie textureset in a urbanic theme, seriously? It seems like you should invert the blendmapped textures towards each other).
Lighting is overbrighted (a day-light map which seems to be lighted like if it were at night with the amount of lamps appearing on the map);
Detailing is once more too concentrated (although less as previous).
Clipping is odd (death material surrounds some huge logo?).
Pickups are off balance and WAY too low (10 riflerounds, 4 rockets and 4 grenades for 32 people? yea sure). Seems like you keep loving the machinegun yet hate all other weapons (especially explosives, which actually shake up the gameplay a bit from being boring).
I wouldn't mind to be more specific, but I don't have time for such thing now. I would advice once more to make some smaller map and do it right for once. Make a proper layout (with playerstarts, weapons, etc all present!), test out and receive input from others (put on Quadropolis if it really has to. I know this actually shouldn't be done but there are exceptions I guess), start making it fancy (texture, add details, light, clip) and voila, a beta version which still needs a lot of revises but it potentially plays and looks better as you spend time on all steps, not just a few.

4/10

P.S.
It's not that huge. The layout is just very open with wide paths (which I personally hate).

Updated. Check it out, or ignore the updates like the last couple maps.
До свидания и Спасибо
-P

I love this map very much! :D
I think it creates a great atmosphere of being in a giant city. Even if it has 1,8 million cubes o.O it is not as laggy as one might think. You could figure out how to utilize the grid better, though...
So yeah, an epic map. It does lack bit of a flow and we couldn't playtest it because it was too laggy for that. But we explored it and that was already much fun.

9/10 for effort and atmosphere, and creating a really unique setting from me!

love, meow! =)