The idea behind it was this; It's meant to be a light, and quick, atmospheric and space fighter. The central shaft, what's being called spindly, is the main core of the ship. The wings, engines, and cocpit are attached to it in a sort of... armour suit... fashon. Meaning that the core looks to be wearing armour padding, with exposed bits here and there. unfortunately, you cannot see that too well from that one image. I may post more later on, but I am still adding detail.
I'm leaving the tail, it's been troublesome finding something that works on it, and I agree that every vessel needn't have large engines in the rear. It's different, and I like that.