As a writer, I'm much happier in the revision/editing stage than in the first draft stage. I have a half-finished novel that's been half-finished for the best part of 8 years now. I'm now thinking that maybe if I feed the draft into <ML-shiny-of-the-day> with suggestions for how I want the next section/chapter to develop, it could generate some draft copy for me. Possibly several different versions. After which I'm in my Happy Editing Place, shaping existing copy to something I like. Repeat and rinse!

The end result would be 100% my work as the ML algorithm/brains/whatever would be generating new copy based on my existing copy and my vision and direction for the novel. And I get the final say on the results. Win-Win!