Nicely done! I like high-poly mesh work. There are times in my game modeling that I have to consciously stop detailing the mesh and remember what my poly limits are!
If I were you, I'd stick in the Akyazi-type torpedo tubes. You're obviously already working from that angle a bit, and that sort of saucer seems to look better with the "front teeth" knocked out. ;)
I'm also of the opinion (gosh, I'm just FULL of 'em, huh?! :angel) that you should move the nacelles out a bit more.