Got Plaza today. The Uni connectivity gives you cosmetics themed after the game like a dentures balloon (Mametchi's Dental Clinic), a WOW backdrop (Mimitchi's Mangaka), a Galette beret (Kuchipatchi's Galette Restaurant), and a Charitchi statue (Unimarutchi's bike shop). Going to try to get more, I'd assume there's cosmetics and furniture for every shop type in the game.