Slight side path — schools used to each the diagramming of sentences. I think it was determined (rightly or wrongly) that this was not a helpful thing to teach, and it’s not standard in schools today. Also, English is extremely flexible and there are perfectly good sentences which would be fiendishly hard to diagram. But it might be interesting to teach LLMs to diagram all sentences. Then perhaps re-shape the sentence into something simple and direct and feed that back to the human — “Is this what you are asking?” (not giving a fishbone diagram to the human, but a simple sentence which the computer constructed based on a simple, straight-forward diagram as a starting point).

That would remove human input that might introduce poor grammar, and also eliminate run-on sentences that might lead to confusion or vagueness. Not a perfect fix, but it might help.

And, apart from the topic of LLMs, I think human writing would benefit if sentence diagrams were better understood and could be easily demonstrated by a program like MS Word.