I liked it a lot! At first it did seem to be weighted towards the offense, but then with time, as the defense pulled together and worked as a team, it balanced out nicely. It really did force good teamwork, which I liked.
I still haven't decided if I like the new door in the house on map 2 yet, though. I am so used to using that as a semi-safe refuge, it made me jump when a pyro burst in on me and reduced me to ashes!