7.1 is locked as far as features go, keep in mind B3 will likely be in the users hands "soon"; so 7.2 is your hope

.
I do agree though, your staff shouldn't be able to just delete everything, but keep in mind that the box is global, so the only other resolve would be make it admin only but then your staff coudn't monitor the box...
The only real thing to do for now would be to ream everybody lol