As part of my deep dive, I discovered the Archive of Our Own (AO3) which is a repository of fan fiction. I wish it existed 30 years ago when I was in my Star Trek fandom. Oh well, those stories are long lost.
I ended up writing a novella, called Filling in the Gaps, almost by accident, since the words flowed out of me. I was hoping a few people might find it, but today, one week after I released it, I've got far more views (3,676), kudos (179) and comments (30) that I thought possible. I am grateful for every one of them.