As long as the Wager and Nazi Zombies game-modes make an appearance then I will certainly be purchasing this game. If they could include the original Nazi Zombies maps from previous games then that would be ten times better, but I hope they won't be including them as "bonus DLC content" at a price. That would be shameful.
I loved the original Nazi Zombies maps because they were simplistic. You had your perk locations, your mystery weapon boxes and a decent camping position, such as Der Riese with the catwalk. Maps like Origins took the piss with the lengthy processes you had to go through to get to unlock certain things.
I won't be playing the online game-modes such as Team Deathmatch if they are planning on introducing exo-suits into the game. Exo-suits cause a clusterfuck and allow the worst of players to jump over obstacles and land directly behind you, meaning you have less of a chance of going on a lengthy killstreak. The spawn positions on Advanced Warfare were also shameful. You have huge maps, but your enemies have a tendency to spawn in your area. I would have preferred a sequel to World at War, but hopefully that'll be introduced later on down the line.