There is still a lot to do. Regina has her magics again and she probably wants to have power again her underlings. And Regina wants Henry back. And Rumpel has his magic and he still wants Bae. We don’t know if anyone can leave town or not yet. They can still introduce new characters. Everyone seems to be still stuck in the real world even though Henry and Emma both thought that they would go back. There is still more to do.
I think the whole what is going to happen in town is something i just don’t get.
And on the fairytale land side of the thing as they said Snow and Charming are going to try and take back the kingdoms and regain their power there. And there is still plenty of back story they could do there.