Very nice. What's the "fin" under the engineering section (just behind the navigational deflector) for? A sensor array? A super-phaser, missile launcher, or other weapon? Part of an enhanced warp core, comparable to the "bubble" seen under an Imperial Star Destroyer?
From what was seen in the "movie", it houses missiles that can cause suns to super-nova (the "doors" on the front). as well as a phaser bank (shoots out of the running light, for some odd reason...And yes it is a running light).