IF something like that were to happen I surmise we can reasonably expect some sort of announcement/warning to the approved API partners (and probably even to the general public). I would say it’s almost impossible they’ll push through some sort of update that suppresses auto-pinned content without us knowing (at least a little) ahead of time, thus giving us time to adjust accordingly.

Include keywords in important places. Include them in your blog post title, the large "headers" introducing a new section, the first few sentences of your post, and in links. Change your settings so each blog post's URL includes the title of the post, not the date it was posted. Try to make these as descriptive as possible to raise your ranking in search results and attract the right audience.
Make it easy for readers to browse – If you want more pageviews, you should make it as easy as possible for readers to read your other blog posts. You will want to make it easy for readers to find your blog homepage, categories, tags, search bar, and so on. Also, I recommend including links in every single one of your blog posts, so readers can easily find related topics.