@Riven The Appearance Change Pass allows you to change one aspect of your characters appearance. So their eye colour, mane/tail colour, remove a marking, add a marking, grow/shrink by 1hh, etc. So no, it isn't a new design.
Any we're going to ask Blu about Fig, since Lignea's are her species. To have her rooted somewhere but still alive would probably take magic (like a one time magic type of thing. Probably earth magic pass OR using a VOTG Pass). But we'll see what Blu says!