Discussion icon on elements
If there is a discussion on some elements (at least one post), the discussion icon will be displayed on the diagrams for these elements in two forms (one for active discussions, the other if there is an unfinished thread on the element). At the same time, the icon will show, in small numbers, the number of posts on the element. The user will be able to turn this functionality off in their repository settings (in the place where stereotypes in the tree etc are turned off).
Similarly, other icons can be enabled, such as the presence of roles/documents/applications on BPMN activities and so on.