Difficulty?

@GavinRuneblade: well, maybe you have already earned for something better than Nightingale? Try bigger ships - should be easier?

BTW, I wonder if the game adjust enemies to your ship class - does it make them stronger? If not, then effectively 1. playing with bigger ships is easier, and 2. it is not implied that you can finish the game on weaker ships at all, and them should be used to earn for bigger ships ???