It's been my pet theory for a while now that the SV series is a transitional period to unified releases. We switched to silver borders, retired the bespoke set symbols, started using Japanese pack art, and got near 1-to-1 sets like Shrouded Fable/Night Wanderer, and now we're getting a dual set release. Even overseas there have been a few moves to unify things: the Tactics decks released in China, Indonesia, and Thailand pretty obviously copy the aesthetics of our League Battle Decks, and the most recent Japanese starter kit adopted the Battle Academy name.