The Hearken method is great (@EllenMayer) . Ask the readers about the questions they have, and later let them vote to find out the most urgent ones. By the way: you don’t need Hearken to do this. @sebastian 's Krautreporter applied the method successfully with typeforms.
Questions and comments. The former includes the reader before writing the article, the latter after writing it. What about during? During is hard, but a very special genre might be applicable: the Explainer.
The explainer tackles a bunch of questions on a complicated topic, and answers them on by on. Imagine an explainer growing with the reader’s questions. Here is how I imagine it:
The topic of the article is the war in Yemen. The author writes a very short summary about what happens there. Then a typeform asks the reader to ask a follow up question. The questions from other readers are stated below. The reader can upvote and downvote the questions of the other readers.
Now its the authors turn again. He answers the questions, beginning with the most popular one. After publishing an answer to a question it is not possible to vote for or against this question anymore. The question below the first article now is linked to the answer. And surprise: Below the answer is again a typeform for follow up questions.
After a couple of such cycles the author decides to finish the process. All unanswered questions vanish and the editorial team does the final brush up. Voilà: a reader driven explainer is done.