Try adding Starmie ex and Staryu in place of Eevee and Vaporeon if you want a more aggro/early game focus, for example, instead of energy control
Traditionally, this rarity distribution structure meant most packs had a fairly linear rarity curve
Maybe they will get a handle on two or three different decks, understanding the nuances of which cards are important for that archetype and which aren't
Its excellent in WB sacrifice decks where you recover the sacrificed fodder, in decks that have +1/+1 counter synergies, or if you're just getting a couple Elvish Mystics back
Some provide a modest quantity of rounds with low wagering thresholds, while others supply a bigger batch that comes with higher playthrough
If someone brings in a collection of hundreds upon hundreds of cards, they wont have time to sort through every single card to determine value