Bringing FPS improvements into an RPG somehow makes it less of an RPG? I am beginning to think that people don't even understand what an RPG is. Role Playing Games are focused on building a character to your liking and engaging in a world with a story and narrative while making your own choices in combat, dialogue, and other activities. They also allow players to evolve their characters into any fashion they desire, such as a scientist, warrior, silver-tongued individual, ect.
Can you build your own character in Fallout 4? Yes. Will you be placed in a world with a story and narrative that allows you to make tons of different decisions? Yes. Can you fine tune your character into any play style you want? Yes to that as well. These factors alone makes Fallout 4 into an RPG and there is nothing that reveals it being anything less than that. Just because there are improvements that come from the FPS genre, it doesn't mean that RPG elements have to be sacrificed in order to implement them. For me at least, Fallout desperately needed changes to the FPS aspect of the game as I felt it to be fun yet clunky and flawed. Just because it does not operate the exact same way as Fallout 1, 2, and other old RPGs, it does not mean Fallout 4 is not an RPG. It just offers a role playing experience in a different fashion.
I can understand the frustration other veteran players may have seeing this franchise evolving into something different from Fallout 1 and 2. However, change happens as a franchise grows, especially when it moves into the hands of another developer. Unless Bethesda wanted to risk the Fallout becoming outdated and stale, they had to renovate the identity of the franchise. I have seen some people complain about mechanics and features seemingly being removed such as skills. I don't see any RPG elements being taken out, just implemented in a different way. Skills are still there, but they have been placed into perk system in which more significant changes can occur when improving those skills. While the point system for skills was nice, it was pretty outdated and the effects of increasing them were not very significant unless you poured a ton of points into one skill at once.
I think part of the problem is that we are getting angry and annoyed about changes we don't fully understand. We speculate based on small details we know and start to complain based only on what we think may happen. We cannot jump to conclusions about how Bethesda is ruining the franchise when we have not even had the chance to play the game to see how it all works out. Being hyped or concerned about the game is fine and all, but lets not start assaulting Bethesda and each other until we know how everything works.