1. Right now, if an engine is running even at 1-200 units of thrust out of 10000, it consumes almost as much fuel and energy as an engine running at maximum. i suggest changing the mechanics of the fuel calculation.
2. Mode with flight control disabled. So, it's possible to switch to a mode where your ship won't try to line up its trajectory towards the front, so you will be able to coast for a while (with gradual deceleration).
3. add a boost. a boost that temporarily powers up the engines but generates a lot of heat and temporarily increases fuel consumption. during the boost the fire plume should increase - it's nice. the boost would allow heavy ships to be able to avoid firing, especially during U-turn when you need to fight the inertia.
2. Mode with flight control disabled. So, it's possible to switch to a mode where your ship won't try to line up its trajectory towards the front, so you will be able to coast for a while (with gradual deceleration).
3. add a boost. a boost that temporarily powers up the engines but generates a lot of heat and temporarily increases fuel consumption. during the boost the fire plume should increase - it's nice. the boost would allow heavy ships to be able to avoid firing, especially during U-turn when you need to fight the inertia.