Let's not overlook that this is the East Coast. It's definitely looking like a different setting than the Fallout us old-schoolers were looking for... because it kinda sorta is. I ripped on F3 as much as anyone else here (and F2, for that matter...) for its glaring departures in tone and canon, but I reached a point where I realized I had to clear out a little buffer zone for logic where "bitching about them not doing anything new" and "bitching about every new thing they did" overlapped and leave a little room to actually appreciate it when they made moves to distinctify their side of the continent. As a proud member of Team Grognard, I see plenty to be ambivalent about here, but I'm going to wait for the sixteenth before opening the box on Schroedinger's fanboy. A lot of the stuff it initially struck me to complain about is either easily explainable or already has a place or parallel in existing canon.
There's plenty in the trailer I'd specifically like to speculate and/or grumble about, but I'm not going to pick it apart until after coffee, at the very earliest. Composing essay length posts on six square inches of touchscreen is no fun at all.