Yes, clues about the talk-page, in the article-RevisionSlider. On the one hand, most article changes are not accompanied by talk-page discussion. On the other hand, some cases of dense activity are the result of counterpart activity on the talk-page. The edit summary is not a reliable clue for whether there was a discussion, let alone what was said there. On active articles, going through the talk-page is a time consuming effort.
Let's say I visited an article in the past, and now on a second visit I see a lot has changed, some of it not for the better. I want to see what led to this and open the Slider. I can see when some sentence was removed, but not if someone gave a good reason for this. If there was a talk-page indication, I can jump to that discussion and see if this was the result of an edit war, a compromise, or maybe an undiscussed change. Maybe I'll learn that this is a repeating issue, that there are previous Admin decisions, and so on.