Board Thread:General Discussion/@comment-6036560-20131013122430/@comment-5235494-20131110010438

My guess is that once everyone returns from Neverland to Storybrooke, this 'new curse' will be:

1.) The results of Pandora's Box, which Gold and Regina plan to use against Pan as of now. So, it's possible that the box will either corrupt (maybe destroy) Neverland, or perhaps an evil force will follow them back to Storybrooke.

2.) The return of Maleficent! Need I say more? XD

3.) A new villain, or perhaps a villain who will return (like Ursula or Regina's council of villains). It could even be something that King Geaorge does with an enchanted object.