As a resident of the state of New York and a big zombies fan, I';ve akways been interested in the types of weird science experiments and such that would translate well into zombies. And might I say there really is no better place than New York. Why you ask? Because there are three locations that would fit perfectly into the storyline. Perhaps as a follow-up to Five.
The 3 locations are:
Plum Island: http://en.wikipedia.org/wiki/Plum_Islan ... ase_Center
Camp Hero State Park: http://en.wikipedia.org/wiki/Montauk_Project
King's Park Psychiactric Center (Building 93): http://en.wikipedia.org/wiki/Kings_Park ... ric_Center
All three have to do with testing during WW2 and the Cold War. Hell, one even tested teleporting! Maybe the story behind the map is that when the US found that Germany had been experimenting with teleportation, they tried to copy them buy during their own, and after some messing around by the regular zombie cast (Dempsey, Nikolai, Takeo, Richtofen/Sam ) and the cast of Five (JFK, Nixon, Castro, MacNamara), both groups end up teleporting in-bewtween the three buidlings. Now since I'm terrible at ideas, you guys can possibly further speculate on how a map would work. I think it would end up being very interesting.