I agree with letting us delete actors, or give us the option to add just a single enemy contact into our mission. I know the mission setting I'm working. I want to use a single group of enemies a couple of times, and the other is a friendly target that I want to have one of. So far with just running the mission by myself it works as I want it, but when a group of players will try to do it, I know there will be more than one ship in those encounter zones.
Also the other thing I would like to see is the ability to when we make a custom NPC is to select the level of difficult for that NPC. But who knows.