Deadthunder-->  The thought had crossed my mind about using MVAM.  I'm not quite sure how it would work yet, given the impulse engines, but I've reworked a whole bunch of the lower saucer and much more smoothly integrated the two together.  As you can see, there is now a much more obvious line for the separation plane than there was before.  If I think of a way to make it work, I'll go for it.
Vladkko--> Thanks
Wiley-->  You're right, this isn't going to be an enterprise, but if we assume that the Galaxy Class has a production run of 30 years or so, starting in the mid 2350's, then this might be a ship class that starts entering production in the late 2380's and early 90s as a replacement.  (Not to replace the fleet of Galaxy's, but to replace the new production slots, so to speak.
Vortex-->  Not sure what you mean about a cloaking device.  In fact, I haven't added any nacelles yet.  

  If you're talking about those two mechanical bits along the sides near the deflector, those are torpedo launchers, al a Excelsior class.