i honesly don't think people should have access to the safe but only be able to enter and leave the house !
Maybe a similar suggestion would be useful when mike applies the crew system.. Leaders and co leaders will then have access to the crew house's safe and there will be logs to show whatever withdrawal were made!
But for the moment , my whole suggestion is just about being able to give friends or crew members your house's key so it would be similar to a crew base for them until the new crew system is applied!