I love hearing that their Ariel wouldn’t be the sweet girl from the Disney version. Give her a happy ending, by all means, but I’d love it if they incorporated darker elements from the Anderson version, compounded by their darker version of NL (assuming that’s where she’ll be). I want a complex Ariel!
And calling her a “fairytale character” is just generic wording, because she’s a character from a fairytale type story. It doesn’t dictate which world she’d be in.