The Tribute Store debuted in 2015, I believe (correct me if I'm wrong). The entertainment has stayed steady at two shows even if the shows, like the houses, have changed from year to year. And as much as I adore the Coconut Club and want it to become a permanent staple, it doesn't really impact capacity issues. Now, if you could get something similar (but larger) INSIDE the event...
If you periodize the event, I'd argue 2000-2005 was an evolutionary period, 2006-2011 a stable (golden) era, 2011-2014 another period of pronounced instability and change, and 2015 to today another stable era. Someone familiar with the current event would find 2015 much more familiar then someone in 2015 would find 2005. I enjoy the current event much too much to call it stagnant, but it might be fair to say it errs on the side of the familiar and has been slow to respond to its explosive growth.