Prequel. Prequel. Prequel.
Now I'm not meaning a pre-war game. That'd be silly. But by the time of New Vegas, it's been roughly 200years since the War and well mankind is starting to pull through. Heck in Fallout 2 there was several separate advanced Nation states/factions by the End (Vault City, BoS, NCR, Shi Empire and the city made from Arroyo/Vault 13), they even had gold coins as currency for a while rather than bottlecaps.
So I'd have the game set in those early years after the Vaults opened. Where society was still trying to pull together. There'd be more intact ruins and greater valuable stuff to salvage, but also more diverse threats from other vaults and some mutated creatures that didn't survive till the later games. I'd emphasis the survival aspects, as well add community building as you shape your vault into either a tough but honest town or a raider camp over the years.
Now I'm not meaning a pre-war game. That'd be silly. But by the time of New Vegas, it's been roughly 200years since the War and well mankind is starting to pull through. Heck in Fallout 2 there was several separate advanced Nation states/factions by the End (Vault City, BoS, NCR, Shi Empire and the city made from Arroyo/Vault 13), they even had gold coins as currency for a while rather than bottlecaps.
So I'd have the game set in those early years after the Vaults opened. Where society was still trying to pull together. There'd be more intact ruins and greater valuable stuff to salvage, but also more diverse threats from other vaults and some mutated creatures that didn't survive till the later games. I'd emphasis the survival aspects, as well add community building as you shape your vault into either a tough but honest town or a raider camp over the years.