I like your Sylveon motto, but it’s not as straight forward as the other eeveelution mottos. Would you mind elaborating on “A Whole New World”? 🙂
I went with that mainly because Sylveon was our introduction to the Fairy type. Fairies in folklore are mysterious creatures that live just at the edge of what humans understand, sometimes in another world entirely, but when Sylveon turns up, we all dive head-first into that world, and everything changes. Evolving into Sylveon also opens up the world of magic for Eevee, which plays into the ‘adaptation’ theme that I tried to get with all the mottos for that family.