Few things I mentioned in the game as well but just for reference:
The final point's sniper line that goes through the choke tunnel is huuuge and shouldn't go all the way back, especially because it makes for heads barely poking above the wall on the far (RED's) end.
The fences around the balconies at last should both have gaps in them so you can quick get down from them, they're kind of awkward as is.
The leftmost flank (BLU perspective) down below towards last only has a real entrance (as far as I could tell) way back and makes people never go there if BLU has a forward sentry nest/teleporter, which means that people just walk into the choke. The doors of the flank could use some widening too.