As you know, there are several episodes where a character only appears in shapeshifted form, such as Rapunzel in "Eloise Gardener", Prince Eric in "A Wondrous Place" and most of Marian's appearances in Season Four. At the moment, the appearance lists state that the character appears in the episode; but strictly speaking, that is not correct, as we only see someone impersonating them and not the characters themselves.
What if we modify the Appearances section for these characters and add an "Impersonated" parameter to the appearances section, instead of using the normal "Appears" parameter? That way, the data are clear and correct, and the debate about shapeshifted characters appearing or not, would be solved once and for all. What do you think?