OK, so at its base this is a cult preaching hope. In a world that offers none (or very little), that in and of itself can be a positive draw. A few more questions: is Saint Richard a true believer, or is he a scam artist? If he is a true believer (which is the sense I get), what gives his teachings merit? In other words, do people follow him because of his charisma or the force of his will, or do they follow him because he has on occasion done "miraculous" things, and if so what were they? It's one thing to get people to listen to what you say and parrot your ideas, it's entirely another to turn loaves into fishes. Is Saint Richard messianic? Does he preach that there is a timeline, or is it basically "when all who are Lost have been Found" that he's after? How does one go from Lost to Found? Who does the lobotomizing and how?
It sounds like atonement is a big part of proving to Elsewhere that you have been found (i.e. being truly sorry for what you have done). So maybe:
When a member of the cult offers you absolution and you take it, roll+Weird. On a 10+, pick two. On a 7-9, pick one.
* you catch a glimpse of Elsewhere. Treat this as a 10+ hit on open your brain, but it can be about anything (not just your current situation - your past is good, your relationship to other people is better, your relationship to the universe is great).
* you feel as though some burden has been lifted from you, at least for a little while - take +1 forward
* you look upon your past and the people in it with fresh eyes - take +1 Hx with a character of your choice.
On a miss, they've gotten in your head and made you doubt yourself - take -1 ongoing for the rest of the session or until you get your mojo back (i.e. you score your next 10+ hit), whichever comes first.