18 months actually. :/
Imagine if Obsidian had had 5 years.
But a lot of that built on both Fallout 3 and on Van Buren.
I love FNV, it was my top RPG before Skyrim came out, but I think Skyrim will eventually surpass it with the added content. FNV had problems, too. I felt like a lot of the locations lacked the character and humor of FO3. Caesar's Legion was stupid evil and not a serious game faction. Maybe if you had seen some of their civilian areas, seen that their crappy ethics was actually accomplishing something, you could side with them on a male character who was less than stupid evil. As it was, I enjoyed dismantling them in various ways, but that was about it. So there were areas in FNV lacking, too.
Post apocalyptic or not, Bethesda's decision to not spend any appreciable amount of time developing the companions/followers is still inexcusable.
It's puzzling to me, too, but I take it that they didn't see it as a priority. A lot of people in the forums were saying they wouldn't even use followers, they like the lone adventurer thing. So perhaps they took cues from that.
FO:NV alluded to John Steinbeck ("Cass", Rose of Sharon Cassidy "my father named me after some book about dirt farmers he read once") Does Skyrim have a Shakespear reference somewhere?
I'm not sure what you're getting at here, but if you're saying that FNV's writing was "deep" and Skyrim's was not I have to disagree. For one thing they got the Norse themes and feel down very well, even the fact that in Sovngarde people speak in alliterative verse like a Germanic saga. That being one of my nerd interests, I was appreciative.