Well I'm enjoying it so far.
I'm not very far into the game but first impressions are good. A bit lacking on the dialogue and RPG options though.
RPG options? If you are on PC , just make sure to move your mouse point down when you are in the Perks screen, i also thought "what the hell, where's all the skills" ? Until i saw it goes down quite a bit. I think it does looks misleading at first, but i'm now at that point where there;s too many skills i want and not enough points.
As for dialogue, i guess it depends how you play. If iyou did what i did, build the sanctuary settlement , build the 2nd settlement and doing the "minutemen" quests (which involves settlements) , then yea, you will be playing SimCity more than seeing anything RPG-like.
While i find the settlement thing interesting, i don't quite see the point yet. Why would i want more than 1 settlement and the hassle of keeping people happy all the time? I don't see any money out of all of this yet (looks like much later i can, but still, then i'm most likely done with the game).
I see the settlements more as a thing that modders will be making use of , not so much a thing in the single player campaign..well not from what i see so far. So at least i see alot of cool mods coming soon, since you can go pretty wild with building options without making a new map , implies alot of unique quests/adventures (buildings etc) can be modded into the game quite easily. I expect Bethesda to leverage this in their DLCs...
Anyway, dialogue does seem to come alot more once you reach Diamond City and those Brotherhood of Steel guys etc, so you might want to consider deviating from the settlement path a bit (if you are following that of course).
OVerall so far, it does feel like a Bethesda/Fallout game. I haven't seen anything revolutionary, if this came out a year after New Vegas i would be going "meh". Luckily i haven't played Fallout in years, so it feels refreshing, yet it feels all very familiar. I am having fun, and enjoying the freedom, so not complaining......although having to pick between Tomb Raider or Fallout 4 , i might have reconsidered TR had i known Fallout 4 would be this "familiar" .