In one of the latest moo versions.. the feature was added that super administrators are not able to change other super administrator profiles.
Guess what, super admins are able to "login as" another super admin profile... and once done he is able to change everything.. because he is logged in as the other super admin...
So my tip... don't allow super admins "login as" another super admin. (they can login to regular users or moderators).
Or add 1 GOD user who is able to do anything on the site. Only the site owner owns this account.
It will take a long time to get to the levels of other platforms that have these features and many more that have been integrated from scratch.