I think it would be helpful if the online indicator was slightly more advanced.
-So the same dot for 'online' status.
-A black dot in the center of the colored dot to indicate 'online in this game'.
The reason for this is that quiet = suspicious. If you see someone has been online and they didnt respond to an important message you sent, it can create distrust. Sometimes its for good reason because they are being shady and not sure how to lie yet, and sometimes its just because they are checking a different game. If this feature were implemented, I'd like to see the 'online in this game' in the place of where the 'last online' information is in the stats window.