Something I've noticed with one of my ships and several SRA ships; if a ship doesn't have a centerline or -180ยบ off-axis engine, it snags one of the angled ones (looks like the leftward one) and generates a trail from that on the campaign layer. This looks kind of odd; there's a trail swinging violently to the left of the ship's axis of motion.
It seems like this would be fairly trivial to fix on either our end as modders or on your end, but I thought I'd point it out because it pushes for less delightfully weird engine arrangements.