hmmm maybe china? cuz like they were ignored like hell
I doubt it, considering that China has probably suffered similar effects from the war to the U.S., most likely, if there are yet any people alive there, they are far too busy struggling with the dangers of a post apocalyptic land to invade anywhere.
Fallout has never been about grand battles...so I don't think there should be a required "final battle".
Fallout 1: You could destroy the Master without even confronting him
Fallout 2: You could use the automated defenses and Sgt. Granite to defeat Horrigan
Only Fallout 3, forced you to shoot your way through the end...(with the exception of being able to let Colonel Autumn leave).
However, given that Fallout 3 had a final boss, unless the Fallout license changes hands to a company that decides to do things differently, Bethesda will most likely do such a thing in future games too. And besides, there still was a "final boss" fight, or something equivalent to it, you just had the option to avoid an actual fight, and there was still an antagonist who had to be stopped somehow, that process just did not necessarily have to involve a direct confrontation. And there will be an antagonist of some sort in future games too, after all, Fallout games have never been without some sort of central conflict, not surprisingly. It would be pretty boring if the entire game was peaceful, and that really wouldn't befit the post apocalyptic setting.
And if Bethesda creates a whole new enemy, you are going to take it as non-canon, I assume.
Given the way Fallout fans are, most likely, they will complain if Bethesda introduces a new antagonist to the game, and will most likely say it "doesn't fit the Fallout world", and if Bethesda reuses old groups, fans will complain that Bethesda is not coming up with anything original. Truly, when Bethesda picked up the Fallout license, a difficult fanbase came attached.
I'd really like to see Bethesda use a completely new antagonist in future games, though, I mean, what's the point of sequels if you're just going to retell the same story over and over? Granted, some series will continue reusing old villains because they are so iconic of the series that it just won't feel like said series without them, but Fallout is not one of those. And really, the transition from West to East Coast was a perfect oportunity for Bethesda to introduce some of their own ideas for the Fallout universe, yet instead, not only does the Enclave return, but they have basically the same plan as in Fallout 2 except now they plan to distribute it using Project Purity.
seeing as I doubt Beth will ever intend for the last Fallout game to be the last fallout game during development, the end boss will be whoever is the enemy of that game, not the historical enemy of the series (i,e. Enclave, presently)
Or more likely, they'll just go with whatever villain they decide to use, the Enclave has been used twice now, but by no means does this indicate they will necessarily be used again.
I'd like to see some sort of break from the goody-too-shoe endings of everyone is happy. How about some epic cinematics and tragic deaths!
I wouldn't call it "everyone is happy", after all, depending on your choices, you could leave the characters you encountered along the way dead or in bad situations, and then there's the pre-Broken Steel ending for Fallout 3 that many agree is terrible. Regardless, though, Bethesda is unlikely to go into full kill 'em all territory with endings, after all, if you spend the entire main quest working to achieve some purpose or another it seems rather unsatisfying to gamers if their efforts all come crashing down and every character they ever cared about is killed off brutally (in fact, killing lots of characters in itself is a dangerous thing even if it doesn't lead to a full downer ending. Fans may be angered if their favorite characters are killed of needlessly, and, if it is poorly executed, it may even undermine the whole tragedy of it all and just come off as the writers trying to show us that there work is dark for the sake of being dark even if it really doesn't add anything to the story.)
Most likely, the most tragic ending Bethesda will ever give us is a bittersweet ending where you still win in the end, but the victory comes at great sacrifice. Obviously, given the Fallout world, the story isn't going to be all happy-go-lucky, but there's a difference between a good tragedy and a story that's just trying to pretend to be one while simply failing. And while some works are made more realistic by implementing a tasteful level of darkness, some go overboard and just become so dark that it all twists around and becomes like a parody of stories that try to be dark.