Couple quality ideas I think will help improve the game.
1) Being able to do multiple missions on one building at the same time. - It only makes sense, seeing as if you go and scavenge food, you're most likely also killing some zombies, and you would save whomever is there too.
2) The Idle Survivors should die. - It only makes sense that if the zombies are attacking you, they're attacking others as well.
3) Reduction of "rioting". - If you are trying to survive a zombie apocalypse, you sure as hell wouldn't be going on strike every two days because you're unhappy.
4) A second town controlled by an NPC or even a second player. - Obviously you would be paired with someone who was playing the same difficulty, but this would enhance the game by letting you work cooperativley towards an objective, especially on harder difficulties.
~To creator of game~ I feel that the only problem with physics present in this game are the bumpers you cannot flip (do not know name) right above the controlled ones. The amount of speed they give the ball is just incredible and a few to many times it has launched the ball out of play.
Just my opinion, but gravity / light specialization is so cheap. Place 3 armagio's w/ 2+ guardian angels = 99.9% chance of win. If you agree that there should be some fixture to this, press the + button.
Level 11! Level 15! I'm at day 45.... and you don't see me complaining :P. Tips: If you're a hunter, like me, dont worry about accuracy. Use Hunter Rifles, and have two people able to use Rocket Launchers / Gravity Guns.