Once Upon a Time Returns in Less than a Week!

[SPOILER ALERT]
As you know, earlier I made a post back in June
about some unanswered questions that are still held
over since Season 3 ended. Let's see how many of the 20 questions are answered next season!

Last season dealt with an Oz theme (although Oz only actually appeared in 2 episodes) and focused on the Wicked Witch of the West and the mystery of the gap year. Rumple apparently destroyed her but will she return (at least in flashbacks)??

Zelena, The Wicked Witch of the West

One thing I did not include was what happened to Jefferson and who is Grace's mother and how was she lost? This of course is because unfortunately Sebastian Stan, who plays Jefferson, like Jamie Dornan, has been busy with many film projects. We all know what happened to Sheriff Graham/The Huntsman, but what Jefferson is doing is quite a mystery.

Jefferson, The Mad Hatter

The Huntsman (Sheriff Graham) 

Of the 20 questions I placed, we all that number 20 will definitely be a main issue when the season begins!

We will also see a return of Sidney Glass/ The Magic Mirror, who as we know, was also a Genie of Agrabah. But was he Aladdin's genie? (Making the presumption that Aladdin exists in the OUAT universe). In the Wonderland spin-off there were several different genies, so I wonder if any of them are connected with Aladdin or if Jafar had any connection to an Aladdin character or perhaps connected to any other OUAT character (such as Cora, Regina, Rumple, etc.) It would be amazing to see him return!

Sidney Glass/The Magic Mirror/Genie of Agrabah 

Jafar 

Speaking of the Wonderland spin-off, Will Scarlet/ The Knave of Hearts (the first one) will be appearing as a character this season on the regular Once Upon a Time. We know he had a history with Robin Hood and the merry men. I wonder who else!

Robin Hood with Will Scarlet, The Knave of Hearts

I also wonder what happened to some of the other Oz characters.

Glinda, The Witch of the South

Walsh, The Wizard of Oz

Dorothy Gale

And then there are other characters we haven't seen much lately, whom I'd love to see return (at least in flashbacks)

Mulan

Aurora

Prince Philip 

Maleficent 

Rapunzel

Cinderella (Ashley) 

Tinker Bell

Lancelot

Cora, the Queen of Hearts

Another interesting point is when we have cases where characters have been specifically mentioned (not necessarily by name but mentioning them beyond simple implication) but haven't yet appeared (as far as we know)

* The Black Fairy
* King George's Late Wife
* The mother of Grace/Paige (Jefferson's daughter)
* Merlin
* Emma's foster family (families)
* And Probably more to come and others I've forgotten!