This suggestion has two parts. Apologies if this should be two threads.
1. Show if a friend is currently in a lobby and if they are playing, readied up, or waiting for players.
2. Show basic stats about the player such as favorite class, recently played classes, maybe TPR #'s.
This would greatly benefit the community as whole by allowing people to quickly join their friends in a lobby and also analyze the skill of strangers at a glance.