I think the biggest mistake Bethesda made with Fallout 3 is moving it to the east coast, especially to DC, which I find is a very boring city and so not fallouty. I believe that Fallout's soul rests on the west coasts and no where else that same feeling, lore and atmosphere can be achieved. If Bethesda wanted to get away from original area of Fallout i think Seattle, WA would be the best choice. So yeah, i want Fallout 4 to take place in Seattle area. What do you think? Where would you want it?
You think D.C is boring? Its original, full of history and there's tons of things to do. Seattle after being nuked, and its constant rainy climate would be a swamp. How interesting.
Maybe Philadelphia. Don't get me wrong, I'd love to see them move back to the west for a good change, but they've really done most of the interesting cities in the west.