area 51 has to be done, after all the location the 50's theme of fallout, it's simply perfect.
Or not?
Mothership Zeta/Operation Anchorage v.2?
Meaning: Dungeon crawler run and gun crap DLC.
Well, it is possible for them to be able to create a good story for it.
But I highly doubt it. (Although... it is Obsidian after all...)
Besides, A51 is just so over-obvious.
Rather have an area none of us would have thought of.
Going to the commonwealth would be a great idea. Imagine Fallout: Operation London, Big Ben in ruins.
And how would we go across a whole continent?