RiverRunsDeep
Judging from the pictures I've seen, I think it doesn't share the WU's raw power.
Exactly this. It doesn't share a tenth of the WU's raw power. In fact, when I finally had the Lumina in my hands, I realized it was not like the Wild Unknown at all. Lumina has a lovely art style and reads nicely, but it doesn't grab me the way my favorite decks do. I don't dislike the deck, but I also don't feel any connection with it. Also, if you are particular about card stock, Lumina is thick and clunky and difficult to shuffle.
All quite subjective, of course. YMMV.