There are many possibilities for why, but i suspect TPCI felt it would be a better fall release before the holiday shopping period
Topps Card Values While we consider ourselves to be particularly specialized in Charizard collections, we take pride in having cast our net wide enough to have a strong understanding of market values for all types of collectible Pokemon cards
For a unique effect when one of your Digimon has 2 or more same level cards in its stack and attacks, that Digimon can digvolve into a Digimon with the [Night Claw], [Light Fang], [Galaxy], or [CS] trait from your trash for a reduced cost
Glimpse, the Unthinkable's second ability prevents it from being chosen for spells and abilities that specifically ask a player to "choose" or make a "choice" among creatures or other permanents, such as found on cards like Call to the Void, Divine Reckoning, and Vesuvan Shapeshifter
Wandering Gryphon Rider provided protection against Nibiru, the Primal Being , while Fateful Adventure could be activated in a Chain behind a Prank-Kids effect to prevent them from being negated by Ash Blossom and Joyous Spring
It seems more natural that way, and more fun to find out you can draft a Warriors deck, when it's not made obvious