Regarding the ending, along with the posts above, I almost feel like this is a Mass Effect 3 situation in which the developers should provide the ""Extended Cut"" (read: decent ending) providing enough context and explanation on 'what the hell just happened'.
It felt rushed. Even though the quests leading up to the ending felt way more cohesive than FO3 and maybe FO:NV, it fell too much off of what one would expect from a Fallout ending.
I can ignore the fact that you are forced into stuff and have no control over it - even though you can gather and build up the whole Commonwealth - but this felt like a generic ending.
Then again, I might be just mad because they didn't provide a longer ending sequence. It's also extremely sad/bad/weird/disappointing (pick one) that:
In order to have a decent father/son moment with Shaun, you have to exterminate the Railroad and Brotherhood - which, again, I don't see any point to exterminate them in any scenario. I don't even see the point in exterminating the Institute.
Oh well, guess I'm gonna have to carry that weight.
E: Also, forgot to mention:
The moments where you ask the leaders why you should exterminate the 'enemy' faction, and if there's other way..all responses are "There's no other way! Because murder!!".
I don't know man. I was liking it until it got to that point. No idea why they made it this way.
I was happy that, AT LEAST, they don't force you to kill certain characters or companions, like Virgil and Danse. At least you can influence that.