I'm not positive that I'm in love with the solution I came up with (though it might just be the camouflage look -- I need more pieces). Still, it's small and resembles what I intended it to resemble.
Front view. Ironically, the wing structure also bears some resemblance to the X Wing design.
Rear view. While I do like the look of that single engine exhaust at the top center, it's actually there for a practical purpose, holding the wings in place whereas they would otherwise move about loosely within the structure's frame.
Though I neglected to take a picture of the inside, the hatch does open out into the cabin without any obstruction. A 3.5" figure can fit in here, though it's a bit cramped.