You know, something I don't think anyone has really considered yet.
What if they're not just trying to make Fallout 4 a better Fallout 3?
What if the reason they're changing things in the way they are is because they're trying out a new approach to Fallout? Because thinking about it that's sort of what this is looking like, they're keeping it as Fallout as possible while trying to do it in a different way to see how it works out.
Or they're doing the exact same stuff they did with Skyrim. Besides Fallout 3 was already done better, it was Fallout New Vegas.
Honestly I'm not even going to bother getting myself hyped up for Fallout 4. Because if it does turn out that everyone hates it, at least my expectations will be low enough that I'll probably enjoy the shit out of it.