[Gandalph]

I will start by saying that I am neither for or against the idea of retreat.

In several of the Star Wars games I have played, impulse engines are used in tactical combat and if you wanted to retreat you had to go to the edge of the combat grid (IIRC with a movement penalty) and wait a turn or two while your warp engines warmed up. This made you vulnerable to attack and sometimes your warp capability would be knocked out so you would then be unable to leave the combat grid. As you were retreating, you still had the ability to fire, as long as your weapons were still intact. If you managed to make it out of combat, you would only end up 1 square away from the enemy on the system map and could still be attacked if the enemy still had movement. This style makes total sense to me and IMHO would add to the game play experience.