A) I do not enjoy the idea of having to turn right as I exit the spawn. The spawn orientation also doesn't allow me to see where will I be going, especially with that wooden wall. Also I risk getting spammed from the safety of B).
The whole area C) seems to be pretty narrow. The cover D) seems good tho. I expect red to set up at D), E), F) and the safest G).
Interesting how you leave just one entrance for red at H)

, though in this map it's probably for the best. The whole thing just feels very Dustbowl-ish, with lots of narrow tunnels like I) which just begs to be spammed. J) is also very narrow, judging by devtextures it's 128 - 160 degrees. Maybe 192. Keep in mind that since it's a cliff wall, adding displacement cliffs is likely make the path more narrow than in blockout.
K) is also narrow tunnel, I expect it to be easily defendable and L) to be main killing area. There might or might not be some excessive wranglering along the line of M) - H). The best way for blu will probably be creeping along the buildings from J) towards L). Also, I can't read M).
edit: Also, since I) appears to be a dropdown, blu will have to commit to attack out of a spam corridor with no good option to back out. I'm not sure if they will enjoy it.