As far as I can tell, you are using props way too much. While this isn't always necessarily a bad thing, typically combat in TF2 maps revolves around brush based cover and building, wheres in newer games like Counterstrike Props are used. Take a look at your mid in the screenshots, tons of the stuff around it are all props, even the roof to that small building which could be made a single brush by simply using the clipping tool.
The point itself looks really, really cramped too with the two sniper fences around it. How many units wide is the brush the point sits on?