It would be nice if you could set a 'group move' for multiple ships/fleets in different sectors so they all arrive at the same target sector simultaneously from different directions. Then I might not mind the retreat option being added in.
I don't know if this is possible in simultaneous games since I don't play that type of game.
Can you now initiate attacks while cloaked? If so, it would also be nice if your start point was much closer than it normally is. Like with in ten squares.