1) The trusted players can identify if the player who asks, is his home. Just ask him to open all the doors.
2) I believe that fire should be given to trusted. If you have issue with banning players who are trusted, then dotn trust them.
Its very simple. Let them stay member 2-3-4 months. I dont care.
If they do a mistake and they report it, then it's not grief. It is honest mistake. That's why there is the reversable system, for repairing damages, grief, mistakes.