Here's hoping you can add this feature to the current house customization work.
It would be very nice to have a 'chute' on the outside of your house so people could give/pass you items without having to leave them on your doorstep. It *is* nice to see stuff on doorsteps, but insecure. Instead, someone could put something in the chute and you would find it near your door on the inside. Once in the chute, it's gone. Much like a mail or book return slot. The mail serves the same function, but if you're right in front of a friend or neighbors house this option would be nicer.