Hmmm. Fascinating. Vektor's Vanguard design looks a little closer to the Constitution-class era, but still very inspiring. I really like the mini-pod for the weapons and deflector dish. I also like the small, highly rounded and smooth space-efficient saucer. Vector's nacelles are interesting as well. They probably would've made better Warp 5 engines than ENT's. I don't think the "shoulder" hulls on the topside-aft of the saucer would be necessary for the NX-01. They look more like a precursor to the Miranda-class in the 23rd century. If the underside mini-pod were shaped more like a DYellow submarine, and the conning tower became the connection to the saucer, the impulse engines could be mounted on small winglets on the sides of the conning tower and the warp engines could be mounted on pylons rising up from the DY-shaped secondary mini-hull. This would make it look more like an evolutionary ancestor of the Constitution-class, but still markedly different to be credible as having flown several decades earlier.