How about any combination of the above? Some of the newer emmys may not know a great deal about the intricacies of the game, but genuinely wish for a team-oriented experience.
You have a job (emmy) that has many facets. You have people, who are multi-faceted beings. Just like diamonds, they have some parts that sparkle and shine better than others. So, you have some emmys that are good at security, some good at administrative tasks, some who are experts in their character's skillsets, and some who know best how the game works. So, to make the whole picture, you plug in folks with strengths in these areas. Yes, some have more than one strength, which only serves to improve GRI.
Sheesh Pitr, been hanging around you too long. I'm starting to sound just like you........