It’s honestly more “Battle City + Some Dragon-Type Goodstuff” more than Memory World, for the most part. (Duelists active in the Memory World arc was the promise of the pack from initial sales sheets, so…)
This time it isn’t just Yugi and the Pharaoh. They’re going for sort of “What if” Decks for Kaiba, Joey and Yugi, that also follow them from Duelist Kingdom, Battle City and onwards.