Response from the site administrator
This sounds like a great idea :)
I am not fully on board with the !seen command as many users want to keep their activities hidden (and the rooms themselves for that matter).
Perhaps a concept of friends can be added in the future, though that adds a bit of social structure and complexity that is still a little ways down the road.
We should be able to highlight mod names and add status's without too much hassle though,
Expect to see this in one of the next few versions!
(Update: Added mod color, 11.04)
(Update: Added status, 11.07)