Just got home and got a chance to play. Last night, a friend and I were playing on 1.7.1.1 and 1.7.1.2 - everything seemed fine, and we liked the fact that there's no starter weapon. Zombie aggro was slightly increased, but manageable. However, I just logged on and played 1.7.1.4, and it's nearly unplayable. The only way to get through a town is pretty much to crawl, sight and sound aggro is ridiculously high. I was crouch-running through Cherno (on grass) earlier, and a zombie (on the other side of a wall, about 50m away) aggros to me. Without a weapon, the only way to get away from the first zombie is to run - this attracts more zombies, and you need to be super lucky and creative in order to break LOS and get away. The game does become easier to survive after you get a gun, but it doesn't change the fact that zombies will aggro from half the town away even if you crouch-run over grass.