One thing that bugs me (a very very little, just sticks out now and then): What's up with the center cut out of the saucer? What purpose, beyond looking cool, does it server? Granted it makes the Vengeance look like something out of STO, but beyond that...well why?
KLINGON COMMANDER: Target the saucer section! Fire!
(torpedoes harmlessly pass through saucer hole)