Boarding up doors/windows, locking houses.

[ShallowTech 196]

I am not sure if something like this could be implemented and if so it would be a lot further in development. It would be awesome if zombies were harder to kill, for instance, having to hit or shoot them in the head. Melee would take multiple hits and guns would be one. It is kind of that way now but they still die pretty easy. If zombies were a bit more difficult to handle, being able to shut a door and board up a house would be awesome. If the zombies could break through doors and windows, maybe pull down boards. This would be pretty cool if you were trapped in a house alone or with another person and agro'ed zombie started to try and break in!

[Whyherro123 2283]

They aren't zombies. They are "just" normal people infected with a disease that destroys brain function.

This brain damage makes them act similarly to someone hopped up on meth and PCP: aggressive and hard to kill. You ever hear about police having to empty multiple magazines into a druggie rager in order to take them down?

Likewise, they have the same weaknesses as normal people. They aren't superhuman, capable of ripping off boards and breaking down doors, at least, not without hurting themselves.

[IkaikaKekai 1957]

Pretty sure that we will have some sort of building fortification sooner or later.  They want us to take over a building rather than just build a camp/fortress.  To a limited extent we already can with lockpicks, but yeah I would like to be able to screw a sheet of plywood over a window so I won't aggro random zombies and people can't just snipe me while I'm making soup.

It's already been said, we're not gonna get Headshot only zombies.  They MIGHT make it so zombies can break down barriers but I don't think they'll have the mental clarity or even the dexterity to rip down boards from a window or doors, otherwise we'd have zombies running around with weapons.