The teleport at the bottom of the map will always take survivors to a single room, so zombies
could camp that in order to deal with players abusing this.
But I agree, it's pretty annoying that some perks (like juggernaut) allow you to abuse this and not take any fall damage at all, so I've increased the amount of damage players take when falling off the map by 50 (and it also goes through juggernaut's fall damage prevention, so they'll always take the 50 damage). Hopefully this should be enough.