About the nacelles. You're not thinking they are curving inward are you? As far as I can tell, they are the same dome shaped fans but lack the actual dome, nor i there any back lighting. I think this creating a difficult optical effect.
The 'airplane' comment from the description of the trailer, and some comments I've read here, make me wonder if that's what people are seeing. I can certainly see that, I had to look carefully to understand.
Clearly, they are still under construction; so I have a feeling that once complete, they'll look similar to how they looked on the TV show.
What amazes me is the implication that all this is being built on the ground; and will then somehow be launched into oribit from the ground.