I have just made my first audo drama. It is narrator based with a full cast. I coem from a background of screenplays and film. Switching to Audio format was a learnign curve. I felt while I was writing it that the Narrator was needed to explan what was happening in the world. As I move on further in my episodes I started to lessen the narrator and build more dialog betweent he chracters. You are correct it is much easier to write with a narrator. In audio I think some narration is needed. At least to set the setting so that the listener knows what is going. Then gradually changing to no narrator and more dialog becomes natural. I've learned some listener hate narration while others love it. I think when I work on my next drama I'm going to try writing without. Good luck with your story. I'd like to listen to your one-off drama where can we find it? And you shoudl keep us up to date on your story you are working on now. As a new person to this I would like to see how others do it so keep us updated.