ZR is great though i have a few ideas for it. 1# barricading doors with planks that can e found around the map. 2# if a survivor and a zombie die at the same time the zombie will respawn at the dead body. 3# 2 more zombie types would be a sprinter and bruiser sprinter is very fast and does low damage and the bruiser is the oppissite.
Flash provides zoom in via the rightclick menu. Actual camera zooming is currently not planned due to technical issues with it.