Long time since anyone has posted.
Only 2 things I think is wrong with this map, and they both been stated before.
This map is too small for inf., and the lower route is way too narrow. I can see where you are going with the small, narrow routh but it just isn't working.
You want more Alpha to go low, well that would mean more Bravo would also try to camp low, and since it is narrow, odds are that Alpha is pwned.