Thanks in advance Robin!
In our case, we have only 5 forums and we were thinking it would be nice to show the same information available in the “Forums” section in the backend of WordPress where it displays a column of the number of subscribers for each forum.
For the frontend, we were thinking this would be the main /forums/ page. And, if it’s not too taxing on the system, to show it at the top of the individual forum page beside “Subscribe” to help suggest you to subscribe.
However, if it’s too taxing on the site to display the subscriber count, we completely understand. We assumed WordPress might already have a way to calculate it on the fly since it’s always displayed in the backend but completely understand things are not simple.
Appreciate your time in between other projects!