Fallout games arent supposed to be like TES, dont you understand!? FO3 deviated from the key aspects and mechanics from the series, Fallout 3 SHOULD have been NOTHING like TES and more like the originals, thats how Van Buren (The cancled Fallout 3 that was being made by Black Isle before Interplay shot itself in the foot) was supposed to be, any game that calls itself Fallout should be like Fallout, NOT THE ELDER SCROLLS.
not only is FO3 like oblivion, ESV will is gonna use the basic framework of oblivion and FO3 also,, they aren't gonna go and change how they make games, its like a fingerprint, each game company makes games in their own style so a game made by the same designers are gonna have a similar structure, this isn't hard to figure out, its a good thing, since bethesda's gamemaking style works, its obvious they use the same framework for their games. bethesda is never gonna make games like bioware or obsidian, as an example, so its very true that FO3 was similiar to oblivion in game structure and mechanics. another example would be the "rag doll" physics in oblivion and FO3 are identical.