I agree with that positioning. In fact that’s one of the things I do like about this show. They can take a story point that would be the climax or a cliffhanger for any other show and make it the “mere” starting point for an Once episode.
I think it’s not going to be just Snow, though it’s pretty clear she’s going to have the central theme, but the entire changing dynamic of the Charming’s (gee, wasn’t that an old 80’s sitcom?) family. What struck me in both The Queen Is Dead and in the sneak peeks is that while, yes, there is the need to fight Cora there is also a sense that Gold (and Neal) is family.