Who doesn't like to carve out their own little fiefdom, now and then? Whether it's a man cave at home, a special project at the office, or a particular job in some organization, there's a satisfaction to be had in owning your own personal space or role. A sense of freedom knowing you're in control. Putting your own personal touch on something is rewarding, and it's nice to see the results of accomplishing that goal for which you've exerted so much effort and planning. Of course, this overarching element has always been endemic to hobby gaming, and there's one specific mechanic that has proven to be a natural fit in capturing that feeling.