Okay, updated the Rigel some. Built new nacelles. I like these much better. Also swept the pylon (horizontals) back a little further, to match the angle on the Orion class. Also adjusted the pylon uprights, so that their forward leaning looks more prominent. Adjusted the pylon/shuttle area (purple section) so that it better matches with the secondary hull (Neon Green section).
At this point, I'm starting to get the "feels right" feeling. As in, this is what I wanted out of the Rigel. Smoothing groups to be added after I clean up the different parts. Finishing details to be added later (such as lifeboat hatches, cargo hatches on the secondary hull, additional phaser strips, and torpedo bays fore and aft). If the poly count isn't too, too high, I may even go in and model in the remaining windows on the hull, and even the shield grid. Anyway, enjoy the pics.
[Edit: New Pics at end of Thread]