i have a suggestion. It would be cool if we could place jumpers on walls and the roof along with the floor. it would make many fun possibilities like having the ragdoll bounce forever around the room.
along with the concept of bouncing forever, there should be another set of items only in Sandbox. The same items, but the items never wear out.
You could make it so that when a zombie transforms a military, police, medic, etc, the person who was transformed still has the items when they die, so zombie medics heal zombies, police and military zombies shoot humans, etc
or if a special human dies, they drop their item and other citizens can pick it up
This is a very amazing game, and an awesomely fun way to spend your time, but I have one thing that I would like to see change: i think that this would be way more fun if in the construction menu, you could build something that could make a Super Zombie once per level that is more powerful than other zombies.
 "Ragdoll Achievement 2"){kind=icon}
 "Incremancer"){kind=icon}