Maybe they will just have one character from a story like they used to do, so they will just have Cheshire as some sort of human character that is Cheshire and not try and redo all of the princesses.
They shouldn’t rewrite their history as much as they might want to. All that will lead to is comparisons which will probably be a lot of oh i liked the first one a lot more then this version.
I think they could redo Rapunzel because she was barely a character at all in the episode she was in because it was about Charming and she had no real story that they were comparing to Charming in some way. They just used her as a prop for the episode.
I just don’t think they can redo the characters that they gave a lot to like Snow, Charming, Red, Mulan, Aurora, and Peter Pan. I think anything after Season 3 could be brought in just because the show stopped having a soul after that, so none of those characters were properly developed. I sort of liked Merlin and Merida, but they were not properly developed.