I figured out the issue with the UV maps and got rid of that weirdness. Added some lights. Rebuilt the nacelles, including redesigning how they're lit.
OK, I've been away for an awfully long time. Much busier "real life" stuff to tend to. I wanted to build a new starship, something of a generally familiar design, but not seen before. I consider this a bridge between the refit Constitution class and the Sovereign class. It's just a bit taller than the Constitution class, but much longer. I built it principally with subpatches.