I'm currently midbuild, using your design. I've had to change some of the colors to shave off about 5000 bucks off the price, but it's still a rather expensive build.
The main problem I have with it, is that the minifig scale interior box, with its backbone underneath, in no real way connects to the lower outer ring, or the upper outer ring of your design. Now, I understand the upper part, because you designed it to be lifted up for the interior to be seen, but the lower and mid section with the wings have no real attachment to the backbone at all. or am I missing something?
Hopefully TheNerdyOne is still active on this forum!