You could cut the middle of those blade-like frontal parts, hollow the space out until like half the way into the model and use that new space to mount some missile launch tubes. (actually, I'd move those gun ports to the center and replace them with missiles. As it stands now the gun placements will require the model to use that gun convergence thingy?)
On the back, you could add some additional detail like protruding engine housings, right behind the cockpit. This will give the viewer a hint where the "up" and "down" of the model is. Maybe strap some sort of spoiler to the engine pods to make it look a little more speedy and going along with the race-like looks.