Yes we can just send them the unity package to the friend we plan to pass-on the world but the stats and faves will be reset back to zero. I am suggesting for a feature that enable world creators to pass the ownership of the world to other player
An example was VRPill passing the Japan Town world to Lakuza
Another example situation is if a world creator wants to quit but some of his/her friend want to continue further development to the worlds of quitting creator, this feature will be useful