That thing is /smokin'/. I'm still geeking out a little bit over here.
Add two more wings like unit behind, but instead of exceed orbit weapons system. Make the wing are equipped Thrusters at the back shape a little like nice sharp wings, cause he looks like he has the firepower and weight..... but not enough thruster to haul those big toys around.
Now that's an opponent I wouldn't mind sparring against.
(though considering it's level of pwnage, I'd likely lose)