I've always been intriqued by Jefferies (Not the "JeffRIES" I have in my title LOL) smaller Enterprise concept and have always wanted to reconcile this with the existing Star Trek universe. So, while working, it popped into my head to use the NX class saucer as a launch point. Something that came after the NX Class refit. I modified the saucer, enlarged and modified the nacelles, and drew a quick dirty sketch of the concept secondary hull. This is all dirty so far. I may lengthen the secondary hull a little, and proportion up the nacelles to it.