Hmm....fantail....thats sounds interesting.
I'll explain my resistance to the bottom wing coming out to the tail, or the tail curl on the ventral side. The problem is that this ship already closely resembles a DDeridex. I'm worried about hitting the "baby ship" syndrome. You know, the "It's a baby Defiant, just add water", the idea that all shuttles look like the ships they come out of, and all ships in a line look too much alike. I want this to be similar to the DDeridex because it was designed by the same designers during the same period, but it has to be different enough to set it apart from its sister ship.
Now, the head accomplishes this, but this has to be more than a transplant and downsize, or a squashdown. Otherwise it ends up like an ugly kitbash.
So, a different ventral wing was in order. As well as a very different connection spar for the ventral neck struts. The pic below shows the areas I concentrated on to set differences. To make a long story short, I had to eliminate the overal "egg" shape, but still make her look like other ships these designers would have made. By doing so, it explains away the whole "baby ship" thing by saying that the same designer made the shuttles for the ship too.
Below is a pic that shows my focus points. The idea was that this ship had to be more sleek, have a quicker look to it. It should be an even match for a Galaxy or a Vorcha.
The similars would be the rear of the head (the flat stages coming out the back), the oval opening on the leading edge of the aft wings, the top wing and the cloak emitters on the spine spar, dorsal side. The differences are obvious...flatter bottom wing, different tail, different head.