How do you keep a small charismatic group from totally dominating the common spaces. In other words, how do you keep them "common," so that even the introverts can feel comfortable using them?
One, it's important have several different common spaces that are used in different ways.
Two, it's about setting specific guidelines about how those spaces are used.
Three, it's about selecting for people who tend to be inclusive rather than exclusive / cliquey.
So far so good.
It's a recipe for conflict, and if they don't have a formal way to precess that conflict, there's going to be either bloody noses or hurt feeling.