Translated by Google translator.
Hello. The fact is that ships like "tank" were built at the highest level of complexity in your fashion. Therefore, ships losing in battles even small pieces of the hull were inefficient, since the cost of repair was often equal to the reward for the ship. Because of this, the emphasis was placed on the shields, which reduced the damage to a minimum. Because of weak armament, many reactors had to be put on shields so that they could regenerate faster than damage. But because of the high cost, I could not close the whole ship with shields, so I had to put up armor. Next, I ran into the problem of maneuverability, because of my weight it was very easy for me to get out of the gun, so I had to figure out how to increase maneuverability not to the detriment of weapons. And then I got the idea, and is it possible to keep the activated boosters endlessly? It turned out that yes, but this will require a whole reactor for each engine. However, there was nothing to do, so I put this system, and even won, because the weight has increased slightly, the price was also not too big, and the speed increased much. The only downside is the explosion, but I did not care, just because I would have rebooted again if I was damaged, so it did not affect anything. On fire extinguishers it was all the same, because if armor penetrated, then all the reactors also exploded, so they were not very necessary to me.
 So a compact and maneuverable "fighter" came out, destroying the enemies or practically without damage, or immediately exploding, ideally suited for this regime. Probably, it will still be superfluous in your fashion because of too low a survival rate. With him, I reached the level of difficulty "major" and could not move forward because of a lack of fuel. I hope in the next updates you will increase it a little, because, as for me, it is almost impossible to move forward.
 About the rest will answer a little later, so the story stretched out.