If was a developer for a zombies studio this “ Nuked “ New York map would be sectioned in multiple layers. your above ground post nuked city. middle ground such as upon activation of power you’d gain some sort of fast travel to a still running tram or train station system that would take you to multiple locations that would seamlessly connect. Lastly, an underground civilian area which the survivors of the time would have fled like sewers or made their own homes in some dark corner of the city. I think it would function a lot like buried in the sense that this map would be CQC but have some very interesting ways to traverse and function like a dynamic yet fluid buried where something is always going on. for this map I would have brought back the Megaton but he would be evolved in someway. The Wonder Weapon I feel would be something from New York, I’m still working on a drawing so stay updated.