I'd like to propose "active user indicator" bubbles in Control to display users who are currently working in/ logged into Control. This emphasizes the fact that folks are collaborating on construction projects.

This is also good to include in the 4D Review as well.

This will be similar to how you can see multiple users are working on a word document through web.

MVP will be seeing who's currently logged into the same project/ iModel.

R1 to show the specific user status (green circle means active, yellow for not active in the past 5 mins, and grey means idle, etc. )

See my attached mock-up.