I know this has come up before but I would really, really like the ability to give or lend a key to my house to a friend.
They could use the garden when I am not there and harvest the trees etc.
Even if I am online I have to stay in the house all the time if friends want to be there to grow stuff and this is not convenient.
If I had a key I could lend to a friend to use any time it would be so useful.