Writers like to give couples obstacles, because that’s where they hit you in “the feels” with how impossible it all seems, for there to ever be reconciliation, then it feels surprising when it does happen and inevitable at the same time.
I think her using his sword, and he having her necklace would be so nice symbolically, echoing his words to August about leaving Emma the car. He wanted to feel like he was there with her, because he couldn’t be with her due to what he believed about being in the way of her destiny and the curse.
Tiny wore a necklace to remind him never to trust, Emma claimed to do the same–and we see Tiny does trust humans again. At first, it was just Emma, but Snow and Charming convinced him to extend that trust beyond just her. Emma did trust Neal again at least with Henry, at least to get her back. I feel trusting him beyond that with her heart is inevitable, but how she gets there will be the surprise.
We already had part of that surprise. She had to be shocked into admitting she still loved him. She never would have otherwise, that wall was too thick, and it would have been tragic as he didn’t fall out of love with her. He didn’t leave her to hurt her, or get together with Tamara to hurt her. None of his actions were done out of spite.
I have mixed feelings about a Tamara/Emma/Neal/Hook confrontation in NL. I do not want Emma or Neal to be out to kill her or him. I do not think that is who they should become. Emma will protect fiercely, might enjoy a bit of violence to blow off steam (her toaster dismantling, chainsawing Regina’s tree), and Bae did come at Hook with a sword, but revenge? I am not sure they’d be as noble as Charming almost dying to prevent Snow from killing Regina, but I do not think they go in for revenge. There might even be a scene where Neal misunderstands something and tries to attack Hook, and Emma gets in the way as Charming did, or where Neal protects Tamara from Emma. These things will create surprise, might cause fans (ok we know it would) to question SF but the happy ending will still be there eventually.
“If I had a world of my own, everything would be nonsense. Nothing would be what it is, because everything would be what it isn't. And contrary wise, what is, it wouldn't be. And what it wouldn't be, it would. You see?” -- Lewis Carroll, Alice's Adventures in Wonderland & Through the Looking-Glass