It seems to be a pretty cool map- the point area is nice, with good height differences. I worry that the map is overscaled, though- how does it compare to other valve maps, particularly width-wise across the point? There also doesn't seem to be a way past or around the point? Which is often very useful. (There is the route underneath, but I suspect you could cover that from the point.
The spawn areas just outside spawn worry me, because they're very big and flat, and you can cover both spawn exits from the top of the train cars. They could also just plain be more interesting-right now, they're kinda just areas you go through on your way to somewhere else.