Excellent! I can't wait to see more! ^_^
I had an idea the other day, too.
Try re-adding the Alpha Channels. But this time, instead of just deleting them, select certain lights and dim them. Otherwise all the lights in the ship being turned off and all... just doesn't seem very realistic to me.

But that's just me. And I do like, still, what you've done with the Century.
-Aeries.
EDIT: Perhaps just add the deflector and warp nacelle glows, as I suppose the lights in the windows could just be removed if, say, the glass is of a certain type?

I dunno. Just another thought. Again, still beautiful work you've done.