Like i said on the other Thread, Emma or Rumple, or both since one may be killed and the other written off
I could possibly see this being Emma, Rumple, & Regina….possibly a combination of Season 2 & Season 3A Finales.
Black Fairy enacts some major curse that could destroy Storybrooke and everybody within it, and Gideon obsessed with wanting to stop her, goes after Emma. Rumple fights his son, giving Emma and Regina enough time to go after the Black Fairy. Eventually in a way similar to killing his father, Rumple sacrifices himself by killing Gideon, thus saving his son from not only darkening his own heart but living a lifetime of darkness which Rumple himself endured, and they go peacefully into the afterlife together.
During the whole showdown with Black Fairy, Emma could tell Regina to go ahead and stop the curse, and goes into a magical fight to the death with Black Fairy, whom she dies defeating, thus fulfilling her final duty as Savior and saving everyone’s lives. And perhaps Regina stopping whatever curse Black Fairy enacted, could cost Regina her own life, and she dies “Snow Queen Ingrid” style.
A distraught Snowing decide to return to the Enchanted Forest to rule and raise Prince Snowflake as they wished to do so with Emma. An equally distraught Belle could decide to travel and see the world, and live her life to the fullest, as her son and husband would have wanted. If Zelena doesn’t return to Oz to reign and raise Robyn, I could see Regina leaving Storybrooke in her hands, and Zelena becomes Mayor. To honor Emma’s memory, Hook could choose to look after Henry which in a surprising way would parallel him to losing Milah, and then choosing to look after Baelfire in her memory.
Losing both his mothers more than likely devastated Henry, and I could see how it could have shaped him into the “hopeless” description provided for the Adult Male Lead for potential Season 7.
"If you go as far as you can see...you will then see enough to go even further." - Finn Balor