They didn't think outside of the box at all. They sat there and made it an Elder Scrolls. I know, I freaking watched their "making of". They talked a lot more the Elder Scrolls than they did Fallout. In fact, Fallout was hardly even mentioned. FFS the game is called "Fallout 3", so of course it should have followed the formula, or at least in the spirit of the franchise. I don't mind changes, but I don't like a) when a game series becomes a clone series of another and B) when these changes kill the spirit of the series.
i disagree, i think they were smart using the oblivion formula, FO3 is kinda like oblivion and i like that, since i loved oblivion, the basic framework was the same, the same template and i would of done the same thing, oblivion and fallout 3 are huge successes for em, its not like those games flopped, if you have excellent cake recipe, don't change it just for the hell of it, it might not be as good, they did what they do well, they are good at open world games, with lots of exploration, dungeons, good enemies to fight with some cool battles, thats what they do best.