Nice video. I think the perk Idea looks awesome and I hope that that is the case, however the zombies with helmets I dont think is going to happen because treyarch never goes that far in to dlc's.
Because we see 1 perk in the Elevator means that all perks are in there, is just a dumb idea, they have put the odd perk inside there, sometimes it will be available to buy and other times it will not be available to buy!