New stern bulkheads made, larger shuttle bay opening more accurately reflects the McQuarrie design. That shuttle bay would be at least 6 times the size of the one on a Constitution class ship.
I thought the offset was perfect. Then I did some quick editing of your photo in Photoshop and moved the dorsal forward so the leading edge would be flush, in order to compare the two side-by-side. Now I can't decide which I like better. I really like the offset, but I think flush actually works better with the overall design....I am still playing around with whether or not to mount the dorsal flush with the leading edge or offset it back a little...
I had actually thought about that for the leading edges of the wings and dorsal. My idea is to use a thinner strip to separate the quarter round pieces and use tiny bits glued into the gap to busy it up, giving the impression that there is something there. I may also space that out with smooth areas that will have window decals applied.Looks great!
Are you going to fill the gap with sensors? That would help explain the unusual secondary hull shape (can't do the same thing effectively with a cylindrical hull) ...