As anyone tried porting the infamous 'Kult: Beyond the Veil' to either NBA or the Esoterrorists (see http://www.amazon.com/Kult-Beyond-Veil-Roleplaying-Game/dp/0971860513).
The biggest obstacle is the 'dipole' Mental Balance from Kult, where interesting things can happen game-wise to characters who are either insane, or too sane.
I thinking that you would implement a Stability Range from 0-30. Most 'Sleepers', the majority of humanity who are unaware that their reality is a cruel hoax, would be between 10 and twenty.
The Transcendent Awakened would be 20+. Infuriatingly serene, and incapable of speaking in other than koans, they have seen through the Illusion, and, at least for short periods, they can ignore\dissipate its effects.
The Abased would be