Domino Administrator itself is not aware of his activities. Some example.
Pressing F9, would be best remaining on same current selected folder, not seeing root every time you press F9.
Deleting a DB, if there is an error, show the DB, not remove from list.
Setting a quota, refresh list and show the quota.
Make showable properties as profile document.
Make column hide/show to limit scrollin left an right. Or make columns moveable.