Oh, I do agree with Mashpotatoe's first thing he brought up. I played through HAARP by myself to look at the layout and I noticed it, but only after I had explored the capture point and the room it was it (I walked out and turned left and found a ramp and I was confused)
And even with prior knowledge of this area, I solely attacked the point from the right side.
I think when I was defending, I was doing a good job of blowing up whoever went this way, though, but there were a few pyros and soldiers who came by this way, including one who must have seen the path AFTER rocket jumping over the rocks.
It might also have to do something with the floor there being grey instead of blue? It just doesn't stick out as much since it blends into the skybox, I think.
I personally didn't notice the 2nd picture being dark, but I think my brightness is up too high. I do think it's a bit big, though, but I don't know of any way I'd recommend to reduce the size, because it played pretty well. I just wish there was a way to warn people of the possibility of soldiers/demomen rocket/stickie jumping into the cap, though.