1. Can be done easily by using the "Custom Commands" Plugin
2. Is already included in the MAM, please see the Commandlist, as i don't know which command it was without looking it up.
3. Is not doable.
You can insert the IDs of the Members as Admins, give them no special rights and type their names in the protected name field in the admins.cfg. If you activated NameProtection, their name is protected.