It would be nice, WHEN you eventually agro all the zambies in a town, you could run into a building and seek refuge or at least not have to worry about agroing. I always loot buildings with an axe out because i know a zambie will walk through a wall or be half in the floor terrorizing me. It also seems that melee aim is messed up when a zambie is glitching through structures. Either way, that seems to have been a problem since dayz one.