Not specifically, but basically the same thing exists in MANY MMOS. It becomes the defacto 'Travel Hub' and rally point, with all the amenities players need. It congregates player in a single space, more so than having multple city zones. Many games have this type of concept, but its not called a Guild Hall. I'm just suggesting the Hall zone and its features make for an ideal travel hub and this I think is a big part of why players miss them and request for them. it would be nice to have those merchants and features in a generic hall shared by all. Don't think it can happen as many of the features would require new code to work in a shared zone.