I like this. For the 2nd idea to work though it would probably have to be a seperate blacklist just for the house. Otgerwise you might run into a problem where like 1 admin has blisted someone but the rest of the fc has them as a friend.

The house blist could have rules for who can and cant add characters to it and such. Dont need a troll joining a fc then blisting the rest of the guild or something.