This is what we agreed upon fixing:
Bus stop is being taken care of, it should not be like that and you are perfectly right.
Loot drop of Toxic zombie will increase to 5 items
The regular zombies will be changed to die from ~2 headshots.
As an initial step, we will remove the blur that you get while wearing a gas mask in a radiation area. This will improve vision at night greatly and based on further feedback we may change it more.
All this should come for the next patch in which we also will bring some other great news that I think PvE players will enjoy a lot.