This massive sightline that's not necessary, snipers have plenty of other options. Also, these routes seem very plain, and it seems that all that matters is the point, but on other koth maps, viaduct for example, the back areas are used, like the building behind the point.
This window should be enlarged a lot, it doesn't feel right to have it this small, at least do 64 up by 128 across, maybe more.
Overall, the map seems a little plain, but it is the first alpha, so when you get play testing, you can fix up the major issues.