Something is up with Jefferson/Mad Hatter, because...
Regina doesn't seem to remember who he is since the curse was broken. (Saying "who?" when Emma mentioned Jefferson, and saying that she's "long since forgotten" where she got the hat). They haven't explained yet how he wound up in our world from Wonderland, though I think they will. Sort of like how they didn't explain right away that Pinnochio was put in the wardrobe with Emma.
I suspect that Regina's mother might be the Queen of Hearts, because her name is Cora (as in corazon), there's a heart on her spellbook, and she was banished into the mirror, but they haven't explained yet how she got back to the Enchanted Forest. Then again, I thought Graham was the Big Bad Wolf, and he turned out to be The Huntsman, so this could be another red herring.
I also suspect that Sleeping Beauty's kingdom might have been preserved because of Maleficent, who is probably more powerful than Regina suspects.
In the Season Premiere - I can understand Emma being upset after all those years, but it didn't make any sense when she said they shouldn't have put her in the tree, because "they could have been together." Regina went out of her way to tear families apart! Why would she have let Snow have her daughter? Also, Emma would have been frozen in time forever as a baby if she wasn't there to start time as an un-cursed adult.
Also, we didn't see much of Sleeping Beauty and Mulan but whining and bickering.
I thought episode two showed a lot more promise, and they sure know how to do those twist endings! I did not see Cora showing up in there with Emma and Snow coming at all!