That distinction between "unintentional mess" and "intentional style" is exactly what I'm trying to figure out. I think I've been treating my ticks as bugs for so long that I forgot they were actually the only unique data points I had.
Structure is where the vast majority have issues, not style, their neurodivergent ticks are going to come out regardless of how much they fight them unless they invest a good deal of time studying style and their style.
I love the idea of using it for structure only. My fear was that if AI touches the structure, it inevitably sanitizes the voice too. But there's probably context I can provide to avoid that.
10 or 15 minutes should allow you to have a basic outline you can ask it to flesh out into a more complete outline and you can do things like tell it to emphasize a point and build the outline around that point or even tell it to reach that point in a roundabout fashion which only emphasis it at the end or anything else which suits your way of developing an idea. After that you just need to write it and if you do things right that will be easy.
AI is a great tool for this stuff and the big models are smart enough to learn your style and intents, becoming more mentor than shortcut, but like a mentor you need to put ins some time with them so they can figure you out and you can figure them out.