How about leadership board on guild.. The one listed there are only the guild master, officers and members. Ranking them for the most AP accomplished, numbers of kills, any other stats, etc.. In this way master and officers can easily choose members to promote base on his/her AP accomplishment, levels, etc.. You can also see your top 10 rogues, mages, warriors on that board.. This will challenge members of the guild who are not in the top to improve there stats.. APs accomplishment, number of kills etc..
Player history will be good to see too.. (especially those players who join last week, leave the second day, join again, leave again, etc...)