I thought the cables would be pretty controversial. Glad somebody likes them!
I'm using Anim8or. A very homely, underpowered program that I've taken an odd liking to.
Here's some progress.
Working on the superstructure between the nacelles. I'm imagining some kind of secondary engineering up there, so I've given a lot of space for people to work, as well as railings and hatches for exterior maintenance and stuff.
Here's a top view, showing a better view of the massive couplers that hold the nacelles in place. In an emergency, the nacelles can be detached at these points.