The only thing I could maybe see worth playing is your layout. Other than that this map needs to be looked at again for a better version.
You have no lighting at all. With no lighting you are given a full bright map, which in every case makes the map not look as good. I guarantee you that if you spent some time with lighting then this map would get more views and more downloads.
If you wanted to get more into the discussion then I could throw in the use of more textures. 3 hardly suits any map unless you are a pro with dev textures. Your skybox is also boring. It has no depth to it, it is just a beige/gray color on all 6 sides.
So if you get the chance then please go back and take some of my advice.