I took a look at your map and came up with a few comments and suggestions. My comments and suggestions in this post have nothing to do with any testing on the test server.
Ok first one, the ledge shown in the screenshot as well as other similar ledges prevent players from walking over them. Players must jump to get over those ledges.

This ledge is very annoying.
Another comment I have is about the 3 inside rooms. Those rooms have three aspects to them which, when combined together, make it very unattractive to fight in them.
The first aspect is that most of the fighting area is on rapidly varying ground. What I mean is the bridges are curved, there is the above mentioned annoying ledge and a water filled ravine thing in the middle.
This leads to the other aspect; water. I have a feeling that anyone who tries fighting in one of those three rooms is going to find himself in the water more often than not, especially if you miss landing on a bridge because of the next aspect.
Lastly, all the curved bridges have extra-tall railings which make it nearly impossible to shoot down the length of the room. I think the tall railings is the most prominent issue I have mentioned. I had a hard time maneuvering around the room when it was empty, I couldn't imagine doing it with a lot of monsters around.
I am not saying these things definitely need to be fixed, but take them into consideration.
Anyways, this map is definitely one of the more graphical appealing maps submitted recently. In general I think it'll be good.