As a die hard zombie fan a lot of thought has addressed this scenario. Black ops 2 has taken it to the top with their brain straining zombie easter eggs. I as one haven't much thought of map ideas or character development. When I play zombies I do think about things that would be unique such as; much like multiplayer s 'creating classes.' I think this would be a great for a system of promotion... Secondly it would be nice to have capabilities of creating zombie clans. This would attract thee multiplayer fan base. In extension I would love to see an entire call of duty ZOMBIES. "Oh, & finally get rid of the old ray gun. It doesn't appeal as well.