Not sure if someone said this, and I have no big basis for it. But with regards to the “Field Office” Tamara mentions in the 10 min promo, and the thoughts others have mentioned that there had to be someone who had a bad run in magic. Maybe the Darlings, Wendy’s family, who right now are the oldest people that have some connection to magical worlds run the organization (“Field Office” People). In the Disney cartoon, Mr. Darling has a connection with Neverland, obviously, and so perhaps he is where it starts.
Totally a whacked out idea with no basis but someone’s gotta run the organization, so why not a connection to Baelfire?