All of the serious guilds on any given server track their own progress in a neutral thread on their respective server forum. Here is Harbinger's for example: http://www.swtor.com/community/showthread.php?t=620607
As such, an in-game tracker is very low on the list, because all of the serious guilds already track each other's progress anyway. And no one is tougher than they are on themselves. And such delicious drama, too!