LOL! It's possibly a phantom. I just can't make my mind up on that one. Iffy evidence.
Yeah, on my original CG builds I did include a lot of stuff I'm sure the modelmakers weren't that happy with. This time around I'm going for "as conceptualised" rather than "as built". I'm synthesising stuff from the drawings, the 2 12 foot models and all three (?) insert models, and I've thrown in one or two artistic license dealies too - things like spots where I suspect there was bracing but the ref is too low-res to make it out.
Given that approach, my pipe bends might as well be tidy and regular. I abhore the 'floating pipes' thing too, so I'm going to add a few unobtrusive braces here and there, as with your braces for the spinal pipes.
Ah, the crossover is just a connecting pipe - transverse, across the top of the spine, half way up to the power centre. Both sets have one, fore and aft of the antenna tower.