Don't know how useful thsi would be, but there should be a list of current admins, although you could always just check the VIP list on one of the admin tools. Also you could list down previous admins and why they left/were removed.
Code:
[u]Current Admins[/u]
????? [id]
????? [id]
[u]Previous Admins[/u]
???? [id] (left)
???? [id] (removed for abuse)