I created this thread because I'm curious for your ideas about potential/made-up maps.
As @RadZakpak once noted zombie maps are often merely a glimp of the entire location: Shangri-la taking place in just a small part of the entire temple complex, Tranzit taking place mostly on the surface of a huge underground tunnel-connected facility, Zetsubou laying on top of R'yeh, an enormous abandoned demonic Atlantis, etc. This way, the players can let their imagination go and theorize and discuss about what may lay ahead, out of the map's boundaries.
Anyway, here are some concepts about maps I know Rad and Hunter talked about a couple of months back:
Der Riese Grief: As we know, after the abandoning of the Der Riese Waffenfabrik, there was a standoff between American and Soviet armed forces, both interested in the research and inventions of Group 935. This would be the perfect setting for a Grief map within Der Riese: 4 American soldiers against 4 soldiers of the Red Army. The map would remain exactly the same, and the two teams might struggle for the best training and camp spots. I'm not fully sure about the spawnpoints, as 8 players in the original Der Riese spawnroom seems a little bit overcrowded. Maybe each team spawns at either side of the map (at teleporter B and at teleporter A).
Vietnam: Older fans might remember the implications of a possible Vietnam map during the Black Ops 1 season: It eventually turned out to be Shangri-la but the idea remained within the community. Now I am asking you, why not? In this discussion you see the arguments: Woods looking like hammered shit, suddenly wearing a 115 tattoo, and then that poster showing Woods surrounded by zombies. It appears like he went on a mission, possibly for Broken Arrow, somewhere in Vietnam. The map will be set somewhere before the events of the Campaign mission S.O.G., deep within the isolated jungles of Vietnam. The map will reveal background information about the Cold War (similar to Classified, Alpha Omega and Tag) and also why the Vietnam War was such an important event for both superpowers. I'm not fully sure if it would be nice to put another old Keeper-related temple complex in this map, or if the map takes place around a crashed vehicle transporting weaponized 115. My personal preference lays at the latter.
Expedición de la Muerte (there we go, @Mattzs See this discussion for the full background. Expedición de la Muerte will be set in South America, somewhere between the end of the war and the events of Verrückt. The map will feature Tank Dempsey and his team of marines, stumbling upon a Group 935 facility while searching for escaped Nazi's via the ODESSA program. The facility appears to be abandoned...by the living. What remains is a terrific army of the undead who have failed to obey their creators. A map that combines the dark concrete of Nacht der Untoten with shadowy jungles of Brazil. "Hmmm" you might think: "another jungle map?". Well I would like to adress that while the Vietnam map is more based on the jungle theme of BO1 (lower jungle with more sunlight), the jungle of Expedición de la Muerte is extremely dark, with large trees blocking all the sunlight and vines, fungi and the thick roots of the trees overgrowing the bunkers. Perhaps gives the Kino effect: dark 'inside' but through the trees you see it is daytime, making the map even more scary in my opinion. Map will feature a bit of Tank's background, about the ODESSA program, about what happened to Group 935 in the huge gap we've got between 1944 and 1945, and about Die Glocke.
Now if you have time and feel like, please share your map ideas. You can choose whether it is about continuing the story, about known events in our story that never got their own map or about explaining gaps and loose ends within the already existing story.
Edit: here's the link to the Podcast der Toten episode in which new map ideas are discussed. What map concept do you have?