TES isn't Fallout. They are 2 separate games and each one should be unique. I don't want Fallout in TES and I'm sure the Fallout fans don't want TES in their Fallout.
Comments like this bug the hell out of me because they are extremely uneducated, and quite frankly don't make any sense.
First of all, Fallout 3 was nothing more then a professional mod of Oblivion (a very good professional mod at that)... or as others have called it, Oblivion with Guns. Sure there were some additions, there were guns, and the setting was 100% different.... but the vast majority of the games mechanics and features were strait out of Oblivion. So its laughable to say that "Fallout fans don't want TES in their Fallout" since if they are fans of Fallout 3.... they obviously enjoy TES in their Fallout.
Also, rational people would love any feature added to a game that makes said game more fun and enjoyable. I'm not going to say "I don't want that game mechanic added to Skyrim because its from another game!" if its a feature that would make the game better, and fit within the universe. If we were seeing aliens, mutants, and laser rifles in Skyrim... then that would clearly be too much Fallout in Skyrim . But something such as bringing the perk system for Fallout over to Skyrim for example? A gameplay system that is theme agnostic, and would help add depth, choice, and customization? Its really idiotic to argue that such a feature should not be added JUST because it happens to be in Fallout.
When you are talking about two very similar to damn near identical games in terms of gameplay, what makes them unique is not their mechanics and gameplay systems. Rather it is their story, setting, and feel... and nothing from the Fallout story, or setting will find its way into Skyrim.