I’m sorry if this isn’t the case but I think we might not quite have communicated the details of the system properly. Have you read through the FAQ section at the bottom of the initial post yet?
I’d also like to avoid calling CoF, SSF. While it will work on SSF, it’s designed to be exactly what you’re looking for I think.
The rewards listed for both are examples, each goes up to rank 10 and CoF will also have access to prophecies which will be a favor sink similar to how the bazaar is the favor sink for MG.
and hey, it might just not be what you’re looking for.