I just had an idea about episode 3×16. I have a theory that maybe Emma, her parents, Tinkerbell, Bell and Neal all travel to the Gale family farm at the start of the episode. There they meet a now aged Dorothy, and discover she still has the ruby slippers. Maybe Neal and Chris Gorhams’ character (who is really Dorothy’s son or the Wizard of Oz) then volunteer to travel to Oz for the purpose of finding something to defeat the WWW, and everyone else stages a funeral for Neal, but maybe it’s a decoy to trick the WWW. Dorothy, Emma, Tink, Belle, and her parents come face to face with WWW, while in the mean time, Hook babysits Henry. That is the sort of thing I could really see happen on this show which loves to use trickery.
"That’s how you know you’ve really got a home. When you leave it, there’s this feeling that you can’t shake. You just miss it." Neal Cassidy