toxicTom: I think, for me it'll be a long time until some game actually comes close to the Witcher 3 experience. I'm of course biased since I love the books and the universe and I think the game(s) (for the most part) perfectly capture their essence. I've never shed as many tears over a game as with Witcher 3, and shedding tears at all over a game is a rare occurrence in itself. I think I would barely need my second hand to count the games that have managed it, and I've played hundreds. So for me, to be that deeply moved by a game, is really something special. That would by a nice idea for a thread - games that deeply moved you emotionally.
That said, I'm a little bit curious about FO4. I like the Bethesda games for the most part. Even bought a physical copy of Skyrim and got rid of Steam to play it. I think they're kind of losing it gradually ever since Morrowind storywise, but still the games have really great moments. But somehow - as much as I felt compelled to play Skyrim (>400 hours) it somehow burned me out. So I'm in no hurry to give FO4 a try. I still have New Vegas to play (by Obsidian, I know) and don't feel any urgency. Especially after the Witcher 3 it will be hard to decide what to play next (probably "something completely different") because the writing there is so outstanding, and Skyrim's and FO3's writing were objectively really bad (though the worlds are terrific).
Yes, that is a good idea. Plenty of games have moved me emotionally. That emotion is just typically hair-ripping levels of anger. ;)
I don't think the writing for Fallout 4 will be better than or even anywhere near Witcher 3. Bethesda does exploration sandboxes. That's fine, it's interesting for a while, but they don't do stories well.
Anyone who wants to see a dissection of two of their recent storytelling attempts can go to
Spoiler Warning, then watch the Fallout 3 and Skyrim seasons. Those illustrate the numerous problems pretty conclusively.