A perfect article. And organized in exactly the right sequence of importance. As a fellow advocate for Indie Authors, recently I've taken to reviewing Medium Published Authors specifically in my publication: Independent Books. https://medium.com/independent-book-reviews
The main problem with visibility comes with the distinct difficulty for readers who are searching for good Indie books. Where Amazon and bookstores feature the best of the best (most popular and professionally manicured), the Indie field is littered with trash. Making it hard to find the gold. That's where we come in, I guess.