Ask HW: idea for a mmo

Peer to peer gaming. (in i using that right in this context?) A game, which each new player installs. When the player creates his character, a town, city, area etc. Is procedurally generated. Other players can visit these new player's homeland when the player is online.,i.e portal times. Each player host's their unique homeland. They don't own anything or have powers, from other players. ..