I think the article preview would be more useful, at least to me, if it was inline with the comment preview and remained on-screen with a long tap. Reading and scrolling while having to hold the long tap is cumbersome. Granted, it’s a preview feature, but I think it’s a worthwhile feature to be able to easily read an article straight from a feed and then go back to the feed. Which is why I also like the comment preview.

For those reading and wondering about the mentioned features, it was introduced in v1.471, which is a beta so you would need to join that to use it.