I'm liking the concept. There's some interesting potential here.
1. Who founded the cult?
2. About when was it founded?
3. Is there a rough estimate of members? Where are they most concentrated?
4. Are there any particular deities worth mentioning? If so, who (or what) are they?
5. Do groups talk to each other? If so, how?
6. What are the demographics of the cult? Are they mostly well-to-do Yamataians, like Scientology, or are we talking more of a poor person's religion, something to bring hope and control to the lowly?
7. How do they achieve the goal of reducing aether use? Pamphlets are the first line of offense, I see, but do they do more?