After seeing Emma and the gang on Neverland called the Fairytale Avengers the idea is stuck in my head. Snow is obviously Hawkeye and do-gooder Charming is closest to Captain America but otherwise it's not a perfect analogy. But Marvel is under Disney’s umbrella so there is crossover potential.
I think Skye could turn out to be Mulan's long lost half sister. (The actress is half Chinese so this isn't that ridiculous.)
And just consider the possibilities of Agents of STORYBROOKE. Just don't try to figure out what the acronym stands for.