Snow should've become the Dark One
Hear me out.
Instead of Emma, Snow should've become the Dark One. Emma as the Dark One honestly always threw me off as extremely random and I genuinely was unable to take her seriously.
It's always been hinted, literally since Season 2 of a potential Snow White villain arc. Emma's transformation into the Dark One if I'm being honest, came out of nowhere and I genuinely felt that the darkness within her was already resolved when she spared Lily.
Yeah, Snow as the evil queen was fun and all, but I felt like it was way too short. Something about her softness and calmness made her seem genuinely terrifying. I want something long term.
Emma felt boring as the Dark One and if I'm being honest, was giving angsty teenager energy.
Snow being the Dark One I felt would've fully resealed her and Regina's conflict with her saving her. It would've also gave an interesting dilemma for Emma who was just fresh from seeing her parents temporarily become the villain and also, we can't forget her anger with her parents before of course, it was abandoned for her regret of killing Cruella.