Yes excellent someone who know ACTUAL FALLOUT LAW and basically summed up my opinion for me and has a sense of humor to boot, so what thy saidBertylicious said:Really it is coming down to either Ronto or The Commonwealth. I'd sort of like a Fallout set in the NCR, with political chicanery as commentry on our own duplicity with (perhaps) the sundering of the Republic, but I doubt anyone else wants to go back to Shady Sands. Also Ed130's point about Obsidian is food for thought.
I guess the Commonwealth is going to have all manner of replicanty "who is the real monster here anyway?" horror and Cloud Atlas-esque moments with robots shouting about not being subject to criminal abuse whilst I shoot them with a rocket launcher. So you've got a plot and a theme right there.
What happens in Canada though? Canada gets annexxed and then there's all that hulabaloo in Alaska and then it goes boom. That's not really a fat lot to be honest. Yes you'd have the army and the natives still slogging it out, 300 years later, which could be quite good and you'd have the wilderness but is there really anything of any real narrative value in Toronto? Is there a great seat of power or learning or industry or hedonism? I am unaware of anything, but then I am very ignorant.
So I'm going with the Commonwealth.
Also not in till the have addressed all the greater storyline points and different dominant factions from fallout 2 will they EVER leave American soil then it will be based in the UK or China which is where the rest of the FALLOUT narrative has always been heading since the 2d top down isometric days of 2, and EVERYTHING bethesda/obsidian have done with 3/new vegas so far is based of stuff that was written for the half completed 3 before it got scrapped so continuing down the trail already beaten is most definitely there style.
Also Australia and canada are nuclear waste lands in the fallout universe they both got nuked into non existence and neither had vault systems so pretty pointless basing games there, which sucks cos im Australian