Hello, here i have some ideas for current home system:
  1. Set home (or default home) to friend or friend+ instead of invite-only.
  2. About the owned home (world creation) we can make a home system like in some mmorpg that we own an default (custom) home and friend can visit anytime.
  3. Add email or message board system to leave offline message to friend (or someone else)
Sorry if my english bad. ^^