Would anyone else like to see an engagement button to show an article's full text?

On some news sites out there, we're seeing an engagement tactic where only a couple of paragraphs of the story are presented, along with a button to reveal the rest of the text. I assume that button then sends an analytics event that can be used to track user engagement, that is, how many people are interested in reading beyond the first couple paragraphs.

I'd personally love to see this as an item added to the upcoming content discovery/engagement URL custom properties.