Board Thread:Character Discussion/@comment-25375217-20170529212214/@comment-25926288-20170529223644

I doubt it. Most villains Once makes can really sustain an arc before they fail to figure something good for them to do. (See: Any other villain) At best, Fiona's influence will be felt, but I doubt her direct involvement will be there.

Technically, Maleficent was kept alive due to a spell Regina placed on her. And I can't see the Dark Curse breaking if Fiona really didn't die.

Fiona wasn't that bad (as the writing really dampens 99% of the villains (1% being Cruella), but floundered because she would have worked better in season 4. Season 3 had her mentioned in both arcs (at least with her wand). But everything about Fiona was overplayed by the time of her brief arrival.

Fiona 101: Shove Cora, Rumple, and Ingrid together with a dash of dark curse. The Dark Curse was okay around season 3, but couldn't withstand season 5's butchering. (Like Dark Hook could have just took a door. Remember that he cast the dark curse to get to Storybrooke, even though there were easier known ways.)

So, motivation BEEN THERE, plan DONE THAT, and that's that.

All in all, Fiona's mentionable history, but likely to not pop up again. It'll be like Jafar popping up again after Wonderland, which we saw and he had no "umph' or real plan besides "I guess I should go get petty revenge."