The users of my forum would love to see, who has read their posts (and who didn’t), just like it’s the case with facebook groups:
To clarify, I administrate a fairly small discourse instance, with about 30 users. We use this as a kind of private social network, to archive discussions and organize meetings. A lot of times one keeps wondering “did a particular user read my post but doesn’t want to answer - or didn’t anybody read my post at all?”
I researched the internals of Discourse and it seems the number of views is already tracked per topic. The extension to track the views per post and show the users who saw post doesn’t seem to be that complicated.
On the other hand I’m really unsure about the performance impact of such a view tracking. Maybe it would only be feasible for quite small forums just as mine?