Ok, I played this on gameday. Thought I'd comment:
Like Grazr, i got two goes on offense, one defence. I think Blu won each round, though my last play though on Red we held them quite well for a while. Overall very good, and fun!
so... hmmm.
First part was very open, so changes above are welcome.
My problem wasn't snipers, but the lack of decent SG places. This continued for most of the map: getting a gun up somewhere it could be shot by sollys and snipes was trouble.
We held near red spawn 2 for a while, but even there, the many paths for blu to take limited gun effectiveness, and once Blu got several ppl on the cart, there was no stopping them. I don't know if you play as engi much, but you should give it a try, then think about putting a few SG hideyholes in. Add ammo nearby to encourage SG placement, with disp and teles. This creates a good rallying spot for red to launch attacks from.
Hope that helps a bit!
The first part of the map is a lot smaller now in b7 and I tried to put more ammo pack around the corners for engis to build guns.