I picked up Cairn on account of a good discount, and after another watch of the SUSD review to confirm my thoughts about that (which were essentially “seems rather like Onitama with some some extra complexity, and a gameplay arc which gets progressively more chaotic, but hopefully in a fun way”).
I hesitated on the purchase when I learned that there’s a reprint on the way with a (presumably better) new graphic design, and what sounds like a small optional addition to the game. I’m not in love with the current look so it was tempting to see how the new version looks; but in the end it was “essentially the same” game, and an inexpensive option. If it turns out to be something I absolutely love then I’d be happy to spend more money on an upgrade, if the new design appeals to me more.