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.
In action
(https://i.imgur.com/j9wZPC8.png)
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.