It would be nice to hover over my friends/groupies names and see how long ago they were last online e.g. "Last seen online: 5 hours ago" or "1 day ago". I understand a lot of people wouldn't want this so it would be best incorporated as a optional setting for those who would like to see it.
It would be in the exact format as when you hover over a friend who has name changed and if the friend has changed their name recently then it would appear bellow that, or change the previous name to be on the same line, this will save space and keep the current format.
Another way to add this information would be to add a 'Last Seen Online' right click option that works the way the examine feature works and outputs the text in the users text chat.
20-Jul-2023 09:46:16