Housing created a very solid base to use your creativity and make something incredible. I would really like some system in place to come to people and see the best design. Sure we can visit our friends, but even if someone will keep his house open to everyone how do I know where I can find really interesting houses?
It would be great to have something like "invitation board" - you can put your invitation there with some description. Anyone can use your invitation and visit your house. If they like design, they can set something like "nice" or "awesome", and the invitation board could have score your house received.