Take a look at it from below. I think there's a glitch on the central structure.
Also, why don't engines have to have additional armour plating around them? Because of this. It means that there is no need to focus armour. That would make it aesthetically possible to sport two engines instead, which would help the ship steer easier (in lore) and also look better than a bulky one (in game). These two here have a potential to look good.
Just my own taste though. I'm not a professional designer, only one of the customers.