I was thinking of changing the look of the zombies firstly from the Nazis to a bit more modern type of look.
I was thinking of creating a map on a Pearl Harbor.
All the dead Americans can be seen rising from the dead and the characters should be changed from nikolai, dempsey, richtofen and takeo to mason, reznov, dragovich and hudson.
Plus this time the player should get to chose which character he/she wants to play, if possible then @ certain levels the older characters should be made available with some perks to each other which would make the gameplay more fun and interesting also adding some meaning to unlocking new players they can chose from for becoming.