It is a bit corny, but I feel like it would be a nice way to get people all introduced into the guild at the same time, because other than a major event really happening in the guild, you can't really get everyone to interact with each other, and the problem with a major event like lets say the rise of an evil wizard, people won't focus on the quest board, and if it is on the quest board then not everyone can participate, so I don't really see many other ways you can introduce everyone, but that GMs probably have something, or are willing to take advice from the PCs