1. Not really, as people from those factions, notes, computer entries, and other things, can tell you about how it was back west, and the changes aren't so drastic as to make it that you NEED to play the other games to find out what they were like before. All you need to do is look at how they were in Fallout 3, but then have someone explain that the BoS is more xenophobic, and doesn't accept outsiders, back west, or that the old Enclave acted the same, except they actually tried to kill everyone using FEV, instead of rebelling against someone trying to do that.
2. That's not true at all, you HAVE to establish the basics of the game's universe EVERY SINGLE GAME for all the new fans. That is why TES has had many of the same books that describe the basic fundamentals of the universe in every game since Morrowind. The fact that Fallout 3's player base was even MORE based around new people then most, due to the series having fallen off years ago, just makes this an even greater necessity. You have to redefine the basic every game, or else people don't have any basis to justify what they are seeing.
3. They kinda do though, the BoS, Super Mutants, and Enclave are just as defining to Fallout as the crowbar is to Half-Life. The first and last things were literally the box covers for Fallout 1 and 2. They didn't need to be the focus of the game per-say, but to not represent them in what was essentially a reboot that wasn't a reboot would be a rather poor choice becuase they DO define the series.
They do for anyone who cares about at least some sort of continuity to the story, which many people do care about.
That is likely true as well, but if you really think they didn't decide to move out east becuase they didn't wat to mess with the established lore of the west, then....... well.....
I don't really see them.
Would it have been a better Fallout game to not have anything from past Fallout games? Would a Half-Life game be good if it didn't feature Gordon Freeman, anyone from Black Mesa, the Xen Aliens, or the Combine?
The idea that you can ever truly get away from the core region, which had spread in some form from the west coast, all the way to Chicago, even before Fallout 3, is naive. By their nature of being the first area to devlop new major powers and government means their ideals and factions will fravel farther then anything else.
Tim Cain disagrees.
Different strain, and both Fawkes and Uncle Leo exist, and they dip people because they are animals instinctively drawn to reproduce.
What game did you play? Because in Fallout 3 the BoS is portrayed as being [censored]s, who only accept outsiders so they can be used as cannon fodder, who only want to fix the purifier to get more people to join their order to be used as cannon fodder, and not out of some sense of righteousness or desire to help the people of the wasteland, and who willingly ignore major threats they could easily purge, such as the Evergreen Mills raiders, the slavers at Paradise Falls, and the Talon Company, who pose a far greater threat to the people of the wasteland then the super mutants, who are too busy hounding the D.C. ruins for more FEV to actually attack anyone besides the largely undefended Big Town, in order to continue their single-minded mission set out before them by the west-coast elders to collect the technology of D.C., and kill the super mutants. They are just doing the latter more then the west-coast would prefer over the former.
Did they really misunderstand the lore of Fallout? or did they misunderstand your personal views on what Fallout's lore meant?