I don't think the console kiddies (as you call them) will be very happy with Fallout 3....
The FPS crowd (as I call them
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) will be very confused, I think, when it comes to making choices, and they, at a later time (maybe?) experience some consequence of these choices. The FPS crowd will also get very confused over this whole VATS thing as they don't understand, I believe, how Action Points work, and as such won't understand why they just can't plaff/pop/shoot super mutants all the time - with their ubar gear....
A FPS game is a very specifik game genre, and Fallout 3 is not such a game, however, nor does it seem to be an an exploring sandbox game like TES games or a more traditional roleplaying game, like the original Fallout games.
It seems to be sort of hybrid between GTA, Gears of War, TES games, with only a sprinkle of Fallout. It is just as if Bethsoft/Zenimax media decided to do their own post apoc game, set in Washington, and then realized the Fallout license/IP was up for graps. Being fans (or so they claim....) they just went and bought the license, and then the IP. Vaultboy's smile on everything supports this interpretation, I believe (although it, of course, is only a guess).
The problem with being big fans of something, and maybe especially Fallout is that (sometimes) you don't have the abiliy to (or can't?) distance yourself from the material at hand, stepping back and analyzing what made Fallout well Fallout. Brother None (kharn) did an amazingly good job at analyzing what Fallout is and especially what it isn't in his editorial on the topic/subject.
The trouble with Bethsoft is also that they don't have any writers (or many writers?) employed, I believe. This means that everyone things they can write a plot for a story in videogame, but doing this is actually as hard, if not harder and more difficult, than writing a story or plotline for a novel, regardless of genre.
Getting back the console kiddies or the FPS crowd, my guess is that they'd rather play Gears of War, FEAR or PREY.