Instead of whining about it on the forums and sticking to whatever you've learned in the past, try new things and adapt to the situation. I myself was getting owned badly by zeds since 1.7.1.4 but there are new methods to avoid zeds outright and even completely deaggro them. Just mess around with the new system a bit you'll get the hang of it seriously the bitchfest that keeps springing up after each single update of this alpha isn't necessary. Learn to explore new things, adapt to situations and find the perfect method to deal with it. Bottom line is, try new things instead of approaching a town or settlement while crouched or standing. Also hurr durr an infected human can see me for up to 70m! Yeah, no shit?