I was looking into this originally however decided against it.
The reasons are
The current tag/pin system although working, its extremely confusing for new players, and most of them dont understand it.
I'm working on a new system which will just have tag and no code. The tag will be private by default and wont be shown in the players name anymore. Also I will have a new chatbox which will allow users to switch between global server chat and also team chat.
I think the new systems I am proposing are alot more user friendly and efficient, so you can understand why I cant show the team leaderboard ingame.