it is possible for you or the enemy to do significant damage even after you “lose” a battle and the end mission box comes up. I myself would like to see how the battle ends up without this annoying box in the way. just now after this box came up after a battle was won by me the enemy still managed to destroy 2 of my dreadnaughts. there should be an achievement for things like this.
here is another idea. after the end of battle box comes up and you lost, close the box and continue the fight with direct control of your ships with new options for battle, namely the new ability to ram enemy ships with the remains of your fleet. tack on some steam cheevies for it and you could still have a nice sense of satisfaction from the fight even though you lost the main battle.