Dude, the chains in the middle are awesome. The map has a very UT/WoW feel to it. It reminds me of..... Ragnarok(?) in WoW. Haven't played in ages..... anyway.....
Some kinda model to attach all the screen wires too..... you can just put more screens on top (but that would be too easy). I think all the wires meeting at one point looks fine. You can just maybe run 1 or 2 wires from that point to another spot in the room. Like.... if they run across the ceiling, down the wall, to a little server model in the corner. Maybe have some spots spark a bit and make the whole thing look a little beat up (make it sloppy) and it might look alright. Or.... since your screens will stay black/not working (I assume) all the wires can meet where they do now, converge into 1 wire, and have it disconnected and dangling with some sparks. Now it looks like the system SHOULD be working, but the screens are black and the connecting wires are broken and sparking.
If you don't like any of those options (or any others), I think the screen system would look just fine without any wires at all. However..... it would be AWESOME if the screens displayed different areas in the map. Even if all the screens showed 1 camera angle (the center of the map) that would be awesome.
The lava texture looks awesome. I can't wait to see the volcano erruption in full effect. I know there is a 'loper that is SICK at particle effects but I can't recall who. He did a really awesome explosion for another TF2 map. I think that erruption can make your map (if ya do it right)

I wish If I knew how to use the particle editor at all I'd lend a hand, but that shit is confusing as fuck to me. I wish ya luck! Post more screens when you update!!!!!
So I showed her. Gave it right to her like I owed her. That's when I turned from Shrek the Ogre into Master Yoda.