It would be nice to have a player's last login time, and maybe even a breakdown of what times/days they play most often (like the
forum's activity charts), in the user CP. This would make it easier for players to figure out a time to play with friends, or people who they just think would be fun to play against/with (for example, if I wanted to get onto the server when someone who claims to be the best terrorist is also on, then I could check the CP and make some time for when they usually play so I can be President when they're in game).
It would also be interesting to break down play time by class- for me, it would show something like 35% Security, 20% Civilian, 20% Terrorist, 11% President, 4% VP, 8% Police, 2% SWAT.
I know these stats are probably not being collected at the moment, so there would be a huge gap in the data for older players, but it would still be cool (that's also why I'm suggesting percentages).
EDIT: Also, adding DB duel stats equivalent to the normal duel stats would be nice.