Just a note, if this is not for FL, it shouldn't be in Ship Submissions.
That being said, my critical eye is finding quite a lot of issues with the model. Don't hate me for this, but:
The engines (Side ones) look mighty weak. Only two points of contact to the main structure? Not only from a stress point of view but from a combat point of view. Also, a ship that size and of that tonnage would most definitely have its own hangar and launch facilities. Hell, given the size of the ship, a corvette or something could probably fit inside the ship.
Otherwise, I like the overall shape and some of the minor details, like the way the engines are designed. A bit like current Jet engines.
Power does not corrupt. Fear corrupts... perhaps the fear of a loss of power.